Best Lead Generation Companies

How Many Lead Generation Companies Products Does G2 Track?

Total Products under this Category: 798

Category Stats (Nov 2026)

  • Average Rating: 4.67/5 (↑0.01 vs Oct 2026) The average rating of products in this category, based on all submitted ratings
  • Top Trending Product: MarketJoy (+2.66%) - Among all products in this category, MarketJoy recorded the largest rating increase compared to last month

Last updated: November 01, 2026

How Does G2 Rank Lead Generation Companies Products?

Why You Can Trust G2's Software Rankings:

  • 30 Analysts and Data Experts
  • 5,500+ Authentic Reviews
  • 798+ Products
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G2's software rankings are built on verified user reviews, rigorous moderation, and a consistent research methodology maintained by a team of analysts and data experts. Each product is measured using the same transparent criteria, with no paid placement or vendor influence. While reviews reflect real user experiences, which can be subjective, they offer valuable insight into how software performs in the hands of professionals. Together, these inputs power the G2 Score, a standardized way to compare tools within every category.

G2 Grid® for Lead Generation Companies

G2 Grid® for Lead Generation Companies plotting products by satisfaction and market presence

Highlighted products: memoryBlue, KlientBoost, INFUSE, Martal Group, Clarify, SmartBug Media, durhamlane, and demandDrive.

Underlying data: [Grid® JSON](https://www.g2.com/categories/lead-generation-services/grids.json?focus%5B%5D=memoryblue&focus%5B%5D=klientboost&focus%5B%5D=infusemedia-infuse&focus%5B%5D=martal-group&focus%5B%5D=clarify-clarify&focus%5B%5D=smartbug&focus%5B%5D=durhamlane&focus%5B%5D=demanddrive)

memoryBlue

memoryBlue helps B2B tech companies build and scale their go-to-market engines. For more than 20 years, we’ve helped hundreds of clients—from fast-growth startups to global enterprises—generate pipeline, expand markets, and build world-class sales teams. Our model combines the best of people and AI. With 650+ sales professionals across North America, EMEA, and APAC, we deliver global reach in 30+ languages. Every client engagement is supported by our SMART services: Sales, Marketing, Academy training, Recruiting and Technology—to create an end-to-end growth platform. In 2024, memoryBlue and Operatix joined forces to become one of the largest and most experienced outsourced sales growth partners in the world. Together, we bring deep expertise to support all go-to-market functions, plus a network of 1,200+ alumni and active candidates ready to scale with you. Whether you need to launch a new product, break into new segments or regions, fill pipeline fast or create expansion opportunities, memoryBlue has the talent, data and experience to help you hit your goals - predictably and globally.

Average Rating: 4.6/5.0

Total Reviews: 351

Who Is the Company Behind memoryBlue?

  • Seller: memoryBlue
  • Company Website:
  • Year Founded: 2002
  • HQ Location: Tysons, Virginia
  • Twitter: @memoryBlueSales
    9,004 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    921 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Information Technology and Services, Computer Software
  • Company Size: 51% Medium, 21% Small

What Do G2 Reviewers Say About memoryBlue?

AI-generated summary from verified user reviews

Pros
  • Users value the excellent communication from memoryBlue, appreciating their responsiveness and adaptability throughout the campaign.
  • Users value the professionalism of memoryBlue's team, highlighting seamless integration and effective communication throughout the process.
  • Users highlight the effective lead generation by memoryBlue, appreciating excellent rapport-building and impactful outreach services.
  • Users value the process efficiency of memoryBlue, which streamlines operations and enhances responsiveness to client needs.
  • Users value the results-driven approach of memoryBlue, emphasizing their commitment to achieving tangible outcomes.
Cons
  • Users find the pricing to be expensive, particularly challenging for smaller organizations with limited budgets.
  • Users find limited functionality in MemoryBlue, struggling to utilize BDRs and navigate the platform effectively.
  • Users express concern over poor lead quality from memoryBlue, limiting effectiveness without immediate hiring needs.
  • Users face communication issues with MemoryBlue, struggling to align business needs and BDR capabilities effectively.
  • Users highlight the high SDR turnover in memoryBlue, leading to frequent staff changes and challenges in maintaining a strong team.

What Are Recent G2 Reviews of memoryBlue?

What Are G2 Users Discussing About memoryBlue?

KlientBoost

KlientBoost is a performance marketing agency that moves fast & breaks things like sales records, plateaus, and your competitors’ hearts. The only thing we don’t break? Our promises and the bank. We have more success stories than other agencies have clients. We help scrappy startups to massive brands, from straightforward products to ultra-complex services. Check out some of the 600+ clients wins we’ve published. Whether you’re in lead gen, SaaS, or eCommerce, we can help you grow your Google Ads, Facebook Ads, SEO, and Email Marketing while also increasing your conversion rates. Get your free marketing plan today and we’ll give you the custom game plan to hit your goals.

Average Rating: 4.8/5.0

Total Reviews: 406

Who Is the Company Behind KlientBoost?

  • Seller: KlientBoost
  • Year Founded: 2015
  • HQ Location: Costa Mesa, California
  • Twitter: @KlientBoost
    4,840 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    97 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Co-Founder, Director of Marketing
  • Top Industries: Computer Software, Marketing and Advertising
  • Company Size: 57% Small, 38% Medium

What Do G2 Reviewers Say About KlientBoost?

AI-generated summary from verified user reviews

Pros
  • Users value the collaborative approach of KlientBoost, fostering continuous improvement and strong partnership in achieving goals.
  • Users commend KlientBoost for their excellent communication, highlighting responsiveness and proactive partnership that drives results.
  • Users value the collaborative partnership with KlientBoost, driving continuous improvements and achieving advertising goals effectively.
  • Users commend KlientBoost for their effective team collaboration, consistently pushing for improvement and shared advertising success.
  • Users value the expertise of KlientBoost, praising their deep marketing knowledge and responsiveness throughout the process.
Cons
  • Users find the cost of KlientBoost to be high, especially with additional expenses for creative production and ad spend.
  • Users experience communication issues, often waiting for responses during critical moments, hindering quick pivots.
  • Users report inefficiency in KlientBoost's strategies, negatively impacting KPIs and wasting valuable investment time.
  • Users experience limited access to expertise, making it challenging to receive tailored support for their specific needs.
  • Users experience miscommunication due to delays in responses and lack of access to dedicated experts.

What Are Recent G2 Reviews of KlientBoost?

What Are G2 Users Discussing About KlientBoost?

INFUSE

Demand Excellence Delivered in Every Relationship We are INFUSE, a global independent partner focused on B2B demand and revenue marketing performance. At the heart of our company is an integrated demand engine powered by first-party and buying group data. Built on AI and enhanced with multiple intent signal streams, this engine drives qualified interest in your business and products to predict the next best action for in-market accounts and buyers. Omnichannel outreach strategies tailor programs that identify and engage prospective buyers throughout their research journey. With a verified global audience of business and technology profiles of over 252M, we ensure precision targeting across geos, industries, and buyer and account profiles. To optimize your investment and deliver on your lead-to-revenue performance, INFUSE demand tools and professionals are available in over 75 countries, across all time zones.

Average Rating: 4.5/5.0

Total Reviews: 293

Who Is the Company Behind INFUSE?

  • Seller: INFUSE
  • Company Website:
  • Year Founded: 2012
  • HQ Location: Boca Raton, US
  • LinkedIn® Page: www.linkedin.com
    821 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Marketing Manager, Digital Marketing Manager
  • Top Industries: Computer Software, Information Technology and Services
  • Company Size: 58% Medium, 22% Small

What Do G2 Reviewers Say About INFUSE?

AI-generated summary from verified user reviews

Pros
  • Users highlight the excellent communication from INFUSE, appreciating their quick responses and proactive support throughout campaigns.
  • Users appreciate the excellent support and communication from INFUSE, enhancing their marketing effectiveness and campaign success.
  • Users value the exceptional customer support from INFUSE, facilitating smooth campaign management and fostering strong partnerships.
  • Users value INFUSE's full funnel capabilities, appreciating their innovative approach and exceptional customer support throughout campaign management.
  • Users appreciate the effective lead generation of INFUSE, noting its depth and quality for engaging prospects successfully.
Cons
  • Users experience communication issues with INFUSE, finding repurposed content lacks clarity and requires excessive revisions.
  • Users experienced miscommunication with INFUSE regarding profiles and invoice timing, leading to some confusion and delays.
  • Users find that the lead quality is poor, making it difficult to transition leads to the sales team effectively.
  • Users experience occasional delivery delays, but the issues are typically resolved quickly and do not hinder overall performance.
  • Users find INFUSE expensive, and suggest adding more pricing options for better flexibility in plans.

What Are Recent G2 Reviews of INFUSE?

What Are G2 Users Discussing About INFUSE?

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Martal Group

Martal Group https://martal.ca/ is a top lead generation and sales enablement agency servicing B2B companies. We enhance your in-house sales team with on-shore sales executives catering lead generation and sales services across 50+ verticals. We integrate with leading data providers and intelligence prospecting tools to provide our customers with accurate B2B contact information. Our researchers use a proprietary workflow to create opportunities and provide targeted lists based on your ideal buyer profile and potential addressable market. Our highly experienced managed sales team builds a strategy that drives prospect engagement with multiple personalized sales touches. We route active prospects to your sales team or onboard new clients for you. We cater both outbound and inbound lead generation, as well as Account-Based Marketing (shortlisting target accounts and reaching the right stakeholder at the right company).

Average Rating: 4.6/5.0

Total Reviews: 135

Who Is the Company Behind Martal Group?

Who Uses This Product?

  • Who Uses This: CEO
  • Top Industries: Information Technology and Services, Computer Software
  • Company Size: 68% Small, 25% Medium

What Do G2 Reviewers Say About Martal Group?

AI-generated summary from verified user reviews

Pros
  • Users commend the professionalism of Martal Group, noting their talent and customized service approach.
  • Users commend Martal Group for their expertise in B2B sales and seamless integration as a team extension.
  • Users appreciate the exceptional team quality at Martal Group, highlighting their tailored, professional, and seamless integration.
  • Users commend the supportive teamwork at Martal Group, highlighting strong collaboration and effective custom service delivery.
  • Users commend the proactive and transparent communication of Martal Group, fostering a strong collaborative relationship.
Cons
  • Users find Martal Group to be expensive, which may deter some before understanding the value they provide.
  • Users express concern over limited control in customizing and exporting outreach contact statuses for targeting ads effectively.
  • Users note a lack of export features for contacts, suggesting it limits their retargeting capabilities.
  • Users are disappointed by the poor customer support, feeling a lack of customization and responsiveness during their experience.
  • Users feel that the sales leads could be better qualified, impacting the effectiveness of their sales strategies.

What Are Recent G2 Reviews of Martal Group?

What Are G2 Users Discussing About Martal Group?

Clarify

Clarify is an outsourced Sales Development and Account-Based Marketing partner for enterprise technology companies selling into complex accounts. We build and run dedicated SDR/BDR programmes, integrate sales development with marketing, and use research-led targeting, multi-threaded outreach and intent signals, not generic AI spam, to create qualified pipeline. Our teams operate as an embedded extension of revenue, sales and marketing leaders across EMEA and the Americas, with multilingual coverage. We focus on meaningful conversations, measurable pipeline and revenue outcomes.

Average Rating: 5.0/5.0

Total Reviews: 19

Who Is the Company Behind Clarify?

  • Seller: Clarify
  • Company Website:
  • Year Founded: 2003
  • HQ Location: Theale, England
  • Twitter: @ClarifyUK
    449 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    193 employees on LinkedIn®

Who Uses This Product?

  • Company Size: 68% Large, 21% Medium

What Are Recent G2 Reviews of Clarify?

SmartBug Media

🤝 Most Decorated Elite HubSpot Partner (3x HubSpot North America Partner of the Year) 🤝 Google Premier Partner 🤝 Shopify Partner 🏅 Continue to hold all available HubSpot Accreditations 📚 More than 1,200 marketing & sales certifications 🏆 More than 150 company awards & recognitions (and counting) 🌟 More than 700 5-star customer reviews across multiple platforms At SmartBug Media, we've been navigating the digital agency space for over 15 years, mastering the art of creating resilient growth across the entire customer lifecycle. From marketing to sales, revenue operations to customer success, and e-commerce to integration - we've got you covered! Now, imagine having access to a center of excellence for hire, ready to propel your organization toward success. That's us! We combine sound strategies, cutting-edge technology, and top-notch talent to set the course for your future success. And hey, it's not just about being full service; we're all about providing solutions that are specifically tailored to your needs. SmartBug's reputation? Well, it speaks volumes about our commitment to our clients. A 3x HubSpot North America Partner of the Year with over 700 5-star reviews and Elite partner status, we are the largest and most decorated HubSpot agency partner in the world. Plus, we're a Google Premier Partner and a proud Shopify partner. In a world that's constantly changing, we remain steadfast in our dedication to delivering client success and an unparalleled agency experience. It's not just about solving complex problems; it's about building relationships based on trust. So, let's journey together towards growth and resilience. After all, it's what we do best!

Average Rating: 4.8/5.0

Total Reviews: 210

Who Is the Company Behind SmartBug Media?

  • Seller: SmartBug Media
  • Year Founded: 2007
  • HQ Location: Newport Beach, US
  • Twitter: @SmartBugMedia
    2,002 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    174 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Computer Software, Financial Services
  • Company Size: 54% Small, 32% Medium

What Do G2 Reviewers Say About SmartBug Media?

AI-generated summary from verified user reviews

Pros
  • Users praise the helpful professionalism of SmartBug Media, highlighting exceptional individualized service and language support.
  • Users commend SmartBug Media's team for their deep expertise and helpfulness in marketing-related inquiries.
  • Users commend the exceptional customer support from SmartBug Media, appreciating personalized training and timely assistance.
  • Users praise the exceptional design team for their creativity, experience, and strong communication, enhancing collaboration.
  • Users commend the knowledgeable team at SmartBug Media for their expertise and friendly support in the industry.
Cons
  • Users find SmartBug Media to be expensive relative to the unsatisfactory initial service and difficulties in communication.
  • Users express frustration over expensive pricing that leads to unforeseen charges and limited results for high costs.
  • Users experience inefficient scheduling during onboarding, feeling a need for more flexibility to grasp the material better.
  • Users report time management challenges due to unprepared strategists, causing issues with scheduling and productivity.
  • Users report frequent communication issues with SmartBug, impacting the effectiveness of their strategists and meeting preparations.

What Are Recent G2 Reviews of SmartBug Media?

What Are G2 Users Discussing About SmartBug Media?

durhamlane

durhamlane is a specialist B2B sales company providing outsourced SDR teams and sales support to companies with complex, long-cycle purchase processes. We deliver outsourced SDR and b2b sales solutions to help mid-market and enterprise businesses generate, qualify and convert leads through high-value sales cycles. With over 15 years’ experience solely focused on sales development for clients across the UK, Europe and North America. We combine a proven methodology - 'Selling at a Higher Level' - with performance based delivery models and native-language SDR teams to scale growth. • Fully-managed services including outbound sales development, lead conversion, new customer acquisition, customer expansion and event-sales support. • A consultative 'Selling at a Higher Level' methodology developed in-house, paired with AI-powered sales technology and data-driven insights to support consistent pipeline generation and conversion. • Performance-based commercial models aligned with measurable outcomes (such as sales-accepted leads and revenue), instead of pure time-based billing. • Fast mobilisation (typically around a 30-day onboarding to market) and scalable native-language SDR teams covering the UK, Europe and North America, enabling global reach. • Transparent reporting integrated with clients’ CRM systems (for example, via Salesloft integration) and regular insights to improve campaign performance and decision-making. durhamlane’s offering is tailored for organisations seeking specialist external support in b2b sales - especially where in-house teams may be overstretched, inexperienced in long sales cycles, or lacking scale. Our emphasis on proven process, data transparency and tangible business outcomes makes us a strong option for companies focused on measurable pipeline growth rather than simply generating activity. Company overview & history • Founded in February 2011.  • Headquartered at Deltic House, Kingfisher Way, Silverlink Business Park, Newcastle (NE28 9NX), United Kingdom.  Awards & industry recognition • Winner, “Best Use of Onboarding & Training” at the Engage B2B Awards (2022) for our internal onboarding program.  • Winner, “Excellent in Partnership Collaboration” at the GSA UK Awards (2022) for our partnership with Konica Minolta Business Solutions.  • Winner, “Technology Innovation” at the North Tyneside Business Awards (2025), recognising innovation in sales services.  • Winner, “Early Careers Employer of the Year” at the British Recruitment Awards (2024), reflecting strong employee development and recruitment practice.  • Shortlisted, “Small Exporter of the Year” at the UMi Northern Powerhouse Export Awards (2023), recognising global expansion and exports.  • Shortlisted in two categories at the UK Company Culture Awards (2024), reflecting commitment to culture, remote working initiative and employee experience.

Average Rating: 4.8/5.0

Total Reviews: 30

Who Is the Company Behind durhamlane?

  • Seller: durhamlane
  • Company Website:
  • Year Founded: 2011
  • HQ Location: Newcastle upon Tyne, GB
  • LinkedIn® Page: www.linkedin.com
    111 employees on LinkedIn®
  • Phone: +44 191 481 3800

Who Uses This Product?

  • Top Industries: Financial Services, Information Technology and Services
  • Company Size: 27% Large, 23% Small

What Do G2 Reviewers Say About durhamlane?

AI-generated summary from verified user reviews

Pros
  • Users value durhamlane's expertise in lead generation, highlighting their well-trained team and advanced technology for effective outreach.
  • Users value the collaborative partnership with durhamlane, emphasizing their trust, accountability, and effective outcomes.
  • Users value durhamlane's effective lead generation approach, appreciating their adaptability and commitment to tailored solutions.
  • Users value the accountability and effective methodologies of durhamlane, leading to successful sales outcomes and strong partnerships.
  • Users value the expertise and thorough process of durhamlane, enhancing collaboration and delivering results seamlessly.
Cons
  • Users face a high turnover of BDRs, though transitions are handled professionally by the team.
  • Users note some staff turnover but commend the team for handling transitions with professionalism.

What Are Recent G2 Reviews of durhamlane?

demandDrive

♾️ Full GTM agency (Sales + Marketing + RevOps in a single partner) ♀️ Female-owned business 🌈 Clay Rising Star Partner Award Winner 🪩 HubSpot Platinum Solutions Partner 🏆 9x Inc. 5000 honoree 🥇 2x BBJ Fast 50 honoree demandDrive is a Boston-based go-to-market (GTM) agency with 15+ years of experience and 1,000+ client engagements. We partner with B2B revenue leaders in industries like tech, HealthTech, cybersecurity, manufacturing, and software to generate pipeline that converts into closed revenue. Why us? The most effective revenue engines are built by aligning people, processes, and technology around the same end goal, which is difficult to achieve when multiple agencies each handle a different piece of the puzzle. demandDrive brings full GTM expertise under a single roof, from outsourced sales services to growth marketing, RevOps, and GTM engineering. Instead of simply providing headcount, our team evaluates your entire GTM setup to identify gaps and opportunities across the funnel before building a tailored program. You get one partner for building and moving pipeline across your entire funnel, with retainers that can flex to where they're needed most during seasonal lulls or busy periods. demandDrive is a Clay Studio Partner, HubSpot Platinum Solutions Partner, and Google Partner. We've been named to the Inc. 5000 list for nine consecutive years and are a two-time BBJ Fast 50 honoree. Our work has produced measurable outcomes for clients, including Qorvo ($136M in converted opportunities), Casenet ($19.8M in closed-won revenue), Jenzabar (1,300% ROI), Smartlinx (467% ROAS), and Gravyty (714% increase in lead volume).

Average Rating: 4.6/5.0

Total Reviews: 70

Who Is the Company Behind demandDrive?

  • Seller: demandDrive
  • Company Website:
  • Year Founded: 2011
  • HQ Location: Waltham, US
  • Twitter: @demandDrive
    990 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    242 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Manufacturing, Hospital & Health Care
  • Company Size: 40% Medium, 40% Small

What Do G2 Reviewers Say About demandDrive?

AI-generated summary from verified user reviews

Pros
  • Users commend the dedication and expertise of the demandDrive team, fostering successful collaborations and project outcomes.
  • Users value the expertise of demandDrive's team, praising their strategic, creative, and supportive approach to projects.
  • Users appreciate the responsive guidance from demandDrive, valuing their tailored support and collaborative approach to sales.
  • Users praise the collaborative approach of demandDrive, appreciating their expertise and accountability in project management.
  • Users appreciate the effective communication of demandDrive, fostering collaboration and making the partnership enjoyable and productive.
Cons
  • Users often face significant miscommunication issues with demandDrive, impacting deliverables and overall project expectations.
  • Users express concerns over insufficient guidance during onboarding, leading to unclear expectations and unmet project promises.
  • Users experience communication issues with demandDrive, leading to misunderstandings and unmet expectations during projects.
  • Users experience an ineffective strategy at times, leading to misunderstandings and unmet quality expectations during projects.
  • Users experience lack of communication with demandDrive, leading to unmet expectations and disconnect during projects.

What Are Recent G2 Reviews of demandDrive?

Appointment Setter Online

Appointment Setter Online is a premium B2B appointment setting and lead generation agency that books qualified sales meetings for businesses across all industries and company sizes. Whether you're in SaaS, healthcare, finance, real estate, logistics, or manufacturing, we deliver revenue-ready leads that convert—fast, reliably, and at scale. We’re not just another lead gen company. We’re the engine behind full calendars and accelerated revenue pipelines. Our agents are fluent, accent-free professionals, handpicked and trained to represent your brand with clarity, precision, and confidence. Why Choose Appointment Setter Online? Fluent, Zero-Accent Agents Every SDR speaks neutral, native-level English—ensuring smooth, professional conversations that eliminate friction and increase conversion. Free Trial – No Risk We’re so confident in our results that we offer a 1-day trial (100 calls, 1 agent) at zero cost. No fluff. No commitment. Just results. Conversion-Driven Process We don’t just book calls—we book qualified appointments. Clients routinely see up to 90% conversion from our leads to active opportunities. Advanced Tech Stack From CRM integrations to AI-driven prospect targeting, we blend tech and talent to deliver high-intent meetings that fit your ICP. Global 24/7 Coverage With SDRs across time zones (USA, UK, UAE, Australia), we engage prospects around the clock so you never miss a lead. All Industries. All Sizes. Whether you're a startup, SMB, or enterprise, we customize outreach campaigns to your industry, product, and sales goals. Transparent, Flexible, Scalable No hidden fees. No long-term contracts. Scale up or down as needed, and interview your SDRs before you commit. What You Get: Consistent stream of qualified B2B appointments Highly-trained SDRs that act as an extension of your sales team Full reporting, calendar management, and CRM syncing Industry-specific outreach campaigns tailored for real conversations and real results Hands-on support, rapid iteration, and real-time feedback loops Our Mission: Your Calendar – Our Mission. We book the meetings. You close the deals. Let us help you scale smarter, close faster, and lead your market.

Average Rating: 4.8/5.0

Total Reviews: 30

Who Is the Company Behind Appointment Setter Online?

Who Uses This Product?

  • Top Industries: Information Technology and Services, Marketing and Advertising
  • Company Size: 100% Small, 17% Medium

What Do G2 Reviewers Say About Appointment Setter Online?

AI-generated summary from verified user reviews

Pros
  • Users value the effective lead generation of Appointment Setter Online, significantly easing their outreach efforts and securing meetings.
  • Users value the high-quality lead generation from Appointment Setter Online, greatly improving efficiency and conversion rates.
  • Users value the effective communication and personalized approach of Appointment Setter Online, enhancing lead quality and engagement.
  • Users love the efficient meeting management of Appointment Setter Online, relieving stress and ensuring quality client connections.
  • Users commend the high professionalism of Appointment Setter Online, leading to meaningful connections and appointments.
Cons
  • Users experience high turnover during onboarding, which affects the initial setup and fine-tuning process.

What Are Recent G2 Reviews of Appointment Setter Online?

ViB.Tech

ViB Tech is a B2B demand generation partner that helps technology companies connect with IT, cybersecurity, cloud, and DevOps decision-makers. Unlike providers that rely on scraped or purchased data, ViB activates its own professional network to deliver relevant, targeted engagement. Through email campaigns, qualified appointments, content syndication, and webinars, ViB helps marketing and demand generation teams reach the right audiences and generate measurable results. More than 500 technology organizations trust ViB Tech, and 84% of clients return year after year. ViB has also been recognized by the Inc. 5000 and Deloitte Technology Fast 500 for its continued growth. Contact us : 603-812-7399

Average Rating: 4.4/5.0

Total Reviews: 40

Who Is the Company Behind ViB.Tech?

  • Seller: ViB.Tech
  • Company Website:
  • Year Founded: 2010
  • HQ Location: Florida
  • Twitter: @VIBriefing
    1,294 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    97 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Information Technology and Services, Computer Software
  • Company Size: 48% Medium, 25% Large

What Do G2 Reviewers Say About ViB.Tech?

AI-generated summary from verified user reviews

Pros
  • Users highlight the exceptional customer support from a responsive and helpful professional team at ViB.Tech.
  • Users appreciate the targeting accuracy of ViB.Tech, consistently generating high-quality leads and effective registrations for events.
  • Users appreciate the quick response time of ViB.Tech, enhancing collaboration and overall satisfaction with their services.
  • Users appreciate the smooth communication of ViB.Tech, enhancing their experience and boosting event registrations effectively.
  • Users value the flexibility of ViB.Tech, appreciating their responsiveness and adaptability to specific needs and budget constraints.
Cons
  • Users find ViB.Tech to be expensive, especially for small and medium-sized businesses seeking affordable solutions.
  • Users note limited functionality in ViB.Tech's webinar platform and desire improvements for enhanced customer support.
  • Users report poor lead quality with ViB.Tech, citing issues like repeated leads and challenges in closing deals.
  • Users feel the lack of focused research in ViB.Tech leads to webcasts that stray from their intended purpose.
  • Users find the slow processes of ViB.Tech lead to prolonged sales cycles and unclear opportunities before meetings.

What Are Recent G2 Reviews of ViB.Tech?

What Are G2 Users Discussing About ViB.Tech?

Leadium

Leadium is a boutique, 100% US-based B2B outbound sales development agency. Founded in 2016, we run managed, outsourced SDR programs across cold calling, email, and LinkedIn that book qualified meetings on your calendar. We're founder-led by design. You work directly with the people who run the company, not a junior account manager juggling 20 logos. Every client gets a dedicated, US-based SDR who learns your business, your ICP, and your value proposition, and represents you like an internal hire. Calls are recorded, transcribed, and reviewed weekly, so you hear exactly what your market is saying and we adjust in real time. We cap our active client roster on purpose. Quality outbound can't be mass-produced, so we keep the team small, US-based, and focused on a limited number of engagements. All data and work product is 100% yours. What we do: - Managed outbound SDR programs (cold calling, email, LinkedIn) - ICP definition and target account list building - Contact data enrichment - Qualified meeting and appointment generation - Email infrastructure and deliverability setup - Outbound strategy and messaging Track record: since 2016 we've built over $1 billion in qualified pipeline across 1,500+ organizations, contributed to 89 acquisitions, and supported clients who've raised $6.5B+ and reached 5 IPOs. Leadium is NGLCC-certified (LGBTBE) and consistently rated among the top sales development agencies by Clutch, GoodFirms, and Inc. 5000. Pricing is flat and month-to-month, starting at $3,500/month for a dedicated cold-calling SDR, with no hidden fees. Want US-based outbound, founder-level attention, and a rep who actually learns your business? Let's talk.

Average Rating: 4.8/5.0

Total Reviews: 92

Who Is the Company Behind Leadium?

  • Seller: Leadium
  • Company Website:
  • Year Founded: 2016
  • HQ Location: Las Vegas, US
  • Twitter: @leadiumio
    123 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    51 employees on LinkedIn®

Who Uses This Product?

  • Who Uses This: Founder and CEO, Chief Executive Officer
  • Top Industries: Information Technology and Services, Financial Services
  • Company Size: 73% Small, 25% Medium

What Do G2 Reviewers Say About Leadium?

AI-generated summary from verified user reviews

Pros
  • Users commend Leadium for its data accuracy and tailored insights, enhancing their sales strategies effectively.
  • Users commend Leadium for their effective lead generation strategies, successfully targeting high-value decision-makers and shortening sales cycles.
  • Users praise Leadium for its strategic innovation, enhancing outreach and optimizing sales processes remarkably.
  • Users appreciate the genuine involvement of Leadium, feeling like an integral part of their team.
  • Users value Leadium's hands-on approach and effective use of modern technology in their outreach strategies.
Cons
  • Users report poor lead quality from Leadium, resulting in minimal leads and significant service dissatisfaction.
  • Users experience miscommunication challenges that slow down alignment and understanding of their unique software and marketing strategies.
  • Users note a high turnover rate, impacting team stability and continuity in using Leadium.
  • Users note insufficient training on the software, hindering effective understanding and communication of marketing strategies.
  • Users report poor customer support, facing unprofessional service and a lack of resolution for contract breaches.

What Are Recent G2 Reviews of Leadium?

LinkedSDR

LINKEDSDR™ — Hire Real LinkedIn Reps to Scale Your Pipeline LinkedSDR™ helps agencies and B2B sales teams hire real, verified LinkedIn professionals to represent their brand through a secure and compliant infrastructure designed for scalable outreach. Each LINKEDSDR rep is a real person with an authentic LinkedIn presence, over one year old and with more than 500 genuine connections. We're built forOutbound agencies, GTM experts, and B2B sales teams who want to hire and scale professional LinkedIn reps safely and sustainably.

Average Rating: 4.9/5.0

Total Reviews: 15

Who Is the Company Behind LinkedSDR?

Who Uses This Product?

  • Top Industries: Marketing and Advertising
  • Company Size: 88% Small, 6% Medium

What Do G2 Reviewers Say About LinkedSDR?

AI-generated summary from verified user reviews

Pros
  • Users praise the amazing customer support of LinkedSDR, highlighting quick responses and effective service in the B2B space.
  • Users commend the timely and reliable delivery of LinkedSDR, exceeding expectations with a steady stream of quality meetings.
  • Users find LinkedSDR's goal achievement exceptional, consistently delivering quality meetings and valuable support in a hands-off manner.
  • Users commend the timely delivery of LinkedSDR, consistently meeting deadlines and exceeding expectations.
  • Users appreciate the ease of work with LinkedSDR, allowing smooth outreach and effective scaling on LinkedIn.

What Are Recent G2 Reviews of LinkedSDR?

Callbox

Callbox is a B2B lead generation and appointment setting company that helps businesses generate qualified sales opportunities, connect with decision-makers, and expand into new markets. Founded in 2004, Callbox provides B2B lead generation, appointment setting, outsourced SDR, account-based marketing (ABM), market expansion, event marketing, and AEO services for mid-market and enterprise companies. Our programs combine multichannel outreach, human sales development, data intelligence, and AI-supported processes to identify target accounts, engage key decision-makers, qualify prospects, and create sales conversations for revenue teams. Callbox supports companies targeting markets across North America, Latin America, Europe, and Asia-Pacific, with programs available across more than 60 countries and 15+ languages. Our services help companies: * Generate qualified B2B leads * Book sales appointments with decision-makers * Build and scale outsourced SDR teams * Reach hard-to-contact accounts * Enter new geographic markets * Execute account-based marketing programs * Generate leads from events and conferences * Improve visibility across AI search and answer engines Callbox has served 15,000+ companies and delivered 20,000+ lead generation programs, helping businesses build sales pipeline across multiple industries and markets. Whether you need B2B lead generation, appointment setting, outsourced SDR support, ABM, or market expansion, Callbox provides an end-to-end sales development solution aligned with your target market, ICP, buyer personas, and revenue goals. Contact Callbox Ready to generate more qualified sales opportunities and connect with the right decision-makers? Talk with the Callbox team today. Toll-Free: +1 888.810.7464 General Inquiries: info@callboxinc.com Sales Assistance: sales@callboxinc.com

Average Rating: 4.5/5.0

Total Reviews: 93

Who Is the Company Behind Callbox?

  • Seller: Callbox
  • Year Founded: 2004
  • HQ Location: Encino, CA
  • Twitter: @CallboxInc
    3,992 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    114 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Information Technology and Services, Computer Software
  • Company Size: 59% Small, 35% Medium

What Do G2 Reviewers Say About Callbox?

AI-generated summary from verified user reviews

Pros
  • Users commend Callbox for their timely delivery, ensuring consistent updates and high-quality leads throughout the project.
  • Users value Callbox for its consistent delivery of high-quality BANT leads and proactive event support, enhancing online presence.
  • Users value the collaborative support from Callbox, enhancing campaign success through tailored communication and flexibility.
  • Users value the flexibility and initiative of Callbox, which adapts to changing business needs and feedback effectively.
  • Users appreciate the professionalism of Callbox, highlighting their responsive team and alignment with business needs.
Cons
  • Users experience payment issues with Callbox, as upfront payment requirements complicate their internal approval processes.
  • Users find the poor customer support frustrating, suggesting a need for localized and culturally aware assistance.

What Are Recent G2 Reviews of Callbox?

What Are G2 Users Discussing About Callbox?

Pipeful

Pipeful grows your business using AI, data, software, and services. No commitments. Cancel anytime.

Average Rating: 4.9/5.0

Total Reviews: 40

Who Is the Company Behind Pipeful?

  • Seller: Pipeful
  • Year Founded: 2000
  • HQ Location: San Francisco, CA
  • Twitter: @PipefulHQ
    11 Twitter followers
  • LinkedIn® Page: www.linkedin.com
    110 employees on LinkedIn®

Who Uses This Product?

  • Top Industries: Information Technology and Services, Marketing and Advertising
  • Company Size: 73% Small, 18% Medium

What Do G2 Reviewers Say About Pipeful?

AI-generated summary from verified user reviews

Pros
  • Users praise Pipeful for their high-quality lead generation, effectively connecting them with decision-makers quickly.
  • Users value the high-quality and consistent leads from Pipeful, enhancing their chances of closing deals effectively.
  • Users find Pipeful super easy to use, seamlessly combining LinkedIn and email for efficient outreach and business needs.
  • Users value the excellent communication of Pipeful, which simplifies processes and enhances collaboration.
  • Users rave about the exceptional quality of work from Pipeful, praising consistency and professionalism in service delivery.
Cons
  • Users desire more transparent pricing for Pipeful, as current costs can be unclear and confusing.
  • Users express dissatisfaction with inefficient scheduling, preferring Zoom over Google meetings for better organization.
  • Users experience slow processes due to long waitlists but appreciate the team's commitment to improving efficiency.
  • Users desire more clear pricing information on Pipeful's website, highlighting an area for improvement in user experience.

What Are Recent G2 Reviews of Pipeful?

What Are G2 Users Discussing About Pipeful?

DMT Business Development

DMT Business Development is a Canadian lead-generation and appointment-setting agency with a core focus on outbound. We Do More Than biz-dev covering all aspects of outbound and inbound sales, and go far beyond. Our services include: - Appointment Setting; - Cold Calling; - Lead Generation; - Data Research; - Email Marketing; - LinkedIn Growth; - Multichannel Outreach; - Hyper-personalized Outreach; - Recruiting; - Sourcing; - Inbound Whether you need an effective dedicated team to drive new customers for your business or a well-performing appointment-setting funnel - we got you covered. Our services vary from building a sales team from scratch, providing cold calling services, and going to generating contact and data lists. Our dedicated SDR team handles all the pre-sales activities for you, so you can focus on closing deals. Our main priority is to ensure your project follows the latest tech trends and AI tools - all along with our in-house built software and AI tools. With the fastest onboarding & strategy implementation on the market, short ramp-up period, hand-curated approach to lead generation, and highly segmented multichannel & personalized outreach - we're able to bring appointments even for the most competitive industries. Over the past 7 years, we developed result-driven tactics for some of our core industries like: SaaS (Productive.io, Yodeck) Software/Web Development (Virtido, Digital Scientists) Recruitment (Cielo, LeFort Talent Group) Life Sciences (Biovision Diagnostics, InVivo Biosciences) IT services (CDS Global Cloud) Service Providers (Top Drawer Merch, Derm for Primary Care) Those are just a few to mention. We also work with e-learning, e-commerce, construction, healthcare, creative, physical products, and other companies. Making sure our strategy aligns with your niche, industry focus, and demand. Whether you run a startup that is trying to leverage growth or an established company expanding to new markets, we help you connect with your Ideal Customers.

Average Rating: 5.0/5.0

Total Reviews: 21

Who Is the Company Behind DMT Business Development?

Who Uses This Product?

  • Top Industries: Information Technology and Services, Computer Software
  • Company Size: 81% Small, 14% Medium

What Do G2 Reviewers Say About DMT Business Development?

AI-generated summary from verified user reviews

Pros
  • Users value the effective lead generation process of DMT Business Development, resulting in tangible, impactful outcomes.
  • Users praise DMT Business Development for its effective lead generation, providing accurate, targeted leads with a personal touch.
  • Users appreciate the effective lead generation and personalized support offered by DMT Business Development, making campaigns seamless.
  • Users appreciate the consistent lead quality of DMT Business Development, enjoying a straightforward and effective process.
  • Users value DMT Business Development for its speedy and accurate lead generation, enhancing streamlined and effective outreach efforts.
Cons
  • Users note a slow process initially, but the team eventually achieves satisfactory outcomes.

What Are Recent G2 Reviews of DMT Business Development?

Alanna Iwuh
A
Researched and written by Alanna Iwuh
Updated October 3, 2024

Lead Generation Services Topics

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Learn More About Lead Generation Companies

Lead generation service providers find, qualify, and hand off sales-ready prospects for B2B companies, whether as booked meetings, qualified leads, or full outbound and demand-generation programs. Their work typically includes defining the ideal customer profile, researching prospects and building lists, multichannel outreach via email, phone, and LinkedIn, appointment setting, and outsourced sales development (SDR) teams that act as an extension of a client's sales organization.

Unlike lead generation software, which a sales or marketing team operates itself, these providers supply the people, process, and data, and they generally work with a client's existing CRM and sales engagement tools rather than around a single vendor's product. G2 lists 790+ lead generation services providers, from specialist SDR and appointment-setting firms to demand generation partners built on first-party data and full-service marketing agencies.



Frequently Asked Questions (FAQs) on Lead Generation Service Providers

1. What are the most trusted lead generation service providers based on user reviews from sales leaders?

memoryBlue, INFUSE, KlientBoost, Martal Group, and SmartBug Media are the most trusted lead generation services providers on G2's Fall 2026 Grid Report, in that order of G2 Score. memoryBlue, rated 4.6 out of 5 across 340+ reviews, leads with a satisfaction score of 96 and a market presence score of 99. INFUSE matches that satisfaction score of 96, and KlientBoost, rated 4.8 out of 5 across 400+ reviews, has the highest Net Promoter Score of the five at 93. Martal Group (4.6 out of 5, 130+ reviews) and SmartBug Media (4.8 out of 5, 210+ reviews) complete the group, and demandDrive is a smaller but strong option with a satisfaction score of 93.

2. Which lead generation service providers does G2 list, and what does each one do?

memoryBlue, KlientBoost, INFUSE, Martal Group, and Clarify are the top-ranked lead generation services providers on G2's category page by G2 Score, followed by SmartBug Media, durhamlane, and demandDrive. memoryBlue is an outsourced sales partner for B2B technology companies, KlientBoost a performance marketing agency, and INFUSE a demand generation partner built on first-party data. Martal Group embeds on-shore sales executives, Clarify runs SDR and account-based programs for enterprise technology companies, durhamlane provides outsourced SDR teams for long sales cycles, SmartBug Media is a HubSpot-focused marketing and sales agency, and demandDrive is a full go-to-market agency. Appointment Setter Online, ViB.Tech, LinkedSDR, Leadium, Callbox, Pipeful, and DMT Business Development also appear on the first page, and each provider's G2 profile lists its services and company size mix.

3. Which lead generation service providers have the strongest quality, verification, and compliance standards?

INFUSE and ViB.Tech describe the most explicit consent-based verification among lead generation services providers. INFUSE says it can pinpoint verified, opt-in contacts using its first-party data, while ViB.Tech says leads from its Deal Discovery program opt in to being contacted and sells appointments on a pay-per-completed-meeting basis. Leadium records, transcribes, and reviews calls weekly, and durhamlane reports through CRM integrations tied to sales-accepted leads. G2 reviewer summaries for memoryBlue, INFUSE, ViB.Tech, Leadium, and Martal Group also raise lead quality as an area to improve, so agree in writing on what counts as a qualified lead and how contacts are verified.

4. Which lead generation service providers are transparent about where their lead data comes from?

INFUSE, ViB.Tech, Martal Group, and Leadium have the clearest data sourcing statements on their G2 profiles. INFUSE builds on first-party and buying group data covering 250M+ verified profiles, ViB.Tech says it uses its own professional network rather than scraped or purchased data, Martal Group combines leading data providers with a proprietary research workflow, and Leadium states that all data and work product belong to the client. G2 reviewer summaries for Martal Group note limited contact export options, so ask each provider to name its data sources and confirm that lists are exportable when the engagement ends.

5. Which lead generation service providers specialize in particular industries or niche markets?

ViB.Tech, memoryBlue, Clarify, and demandDrive are the most focused on technology markets, while Martal Group, DMT Business Development, and Appointment Setter Online cover a wider range of industries. ViB.Tech targets IT, cybersecurity, cloud, and DevOps buyers, Clarify serves enterprise technology companies, and demandDrive adds HealthTech and manufacturing, where many of its G2 reviewers work. durhamlane focuses on long, complex sales cycles and is reviewed mostly by financial services and IT buyers. Martal Group states that it serves 50+ verticals, so ask for client examples in your own industry.

6. Which lead generation service providers are the most reliable for enterprise B2B software sales?

memoryBlue, INFUSE, durhamlane, and Clarify have the strongest enterprise profiles on G2. memoryBlue pairs a satisfaction score of 96 with 650+ sales professionals working in 30+ languages, and INFUSE (satisfaction 96, Ability to Execute 95%) operates in 75+ countries. durhamlane scores 98% on Ability to Execute with an NPS of 88 for mid-market and enterprise buyers, and 68% of Clarify's G2 reviewers are at large companies. Clarify (10+ reviews) and durhamlane (30+) have far smaller review bases than memoryBlue (340+) and INFUSE (290+), so ask for enterprise references.

7. What is the difference between lead generation services and lead generation software?

Lead generation services are managed programs where a provider's team runs outreach and delivers qualified leads or booked meetings, while lead generation software is a tool a team uses itself. memoryBlue, Martal Group, and Callbox are services, and Apollo.io and GTM Workspace powered by ZoomInfo are software for finding, capturing, and scoring contacts. G2 tracks them separately: this category has 790+ providers, while G2's Lead Generation Software category has 200,000+ reviews and lists Apollo.io at 4.7 out of 5. The two are often combined, since demandDrive is a Clay and HubSpot partner and durhamlane integrates reporting with Salesloft.

8. Which lead generation services providers offer outsourced SDR and appointment setting?

Leadium, durhamlane, Appointment Setter Online, Clarify, and DMT Business Development are the most focused on outsourced SDR and appointment setting. Leadium provides a dedicated US-based SDR who handles cold calling, email, and LinkedIn, and Appointment Setter Online offers a free one-day trial of 100 calls with one agent and says it has no long-term contracts. durhamlane typically onboards in around 30 days, and DMT Business Development offers a dedicated SDR team. G2 reviewer summaries for several of these providers cite SDR turnover, so ask how reps are trained and replaced.

9. What does a lead generation services engagement cost?

Published monthly prices for lead generation services start around $3,500 and reach $10,500, with Leadium starting at $3,500 for a dedicated cold-calling SDR and Martal Group listing $4,100 to $10,500 on its G2 pricing page. Leadium's pricing is flat and month-to-month. memoryBlue, KlientBoost, and Callbox do not publish a price on G2, while durhamlane describes performance-based models tied to sales-accepted leads and ViB. Tech sells pay-per-completed-meeting appointments. Cost scales with the number of SDRs, channels, and volume, so ask what a qualified lead or meeting includes.

10. What should I look for, and watch out for, when hiring a lead generation services provider?

Before signing with a provider such as memoryBlue, Leadium, durhamlane, or Martal Group, confirm the definition of a qualified lead, SDR turnover, and ramp-up time. G2 reviewer summaries cite lead quality for memoryBlue, INFUSE, ViB.Tech, and Leadium, SDR turnover for memoryBlue, durhamlane, and Leadium, and slower starts for Martal Group, DMT Business Development, and Pipeful. Satisfaction scores in the Fall 2026 Grid Report range from 1 to 96 across 70+ providers, so read recent reviews for each shortlisted provider and settle data ownership, reporting, and exit terms in writing.

G2 Review Data Insights for Lead Generation Services Providers

Based on 5,400+ G2 reviews of the 790+ lead generation services providers listed on G2.

  • What are lead generation service providers? A G2 category of 790+ providers that find, qualify, and deliver prospects for B2B companies, holding an average rating of 4.67 out of 5 as of October 2026, with 70+ providers placed on G2's Fall 2026 Grid Report.
  • Which software do these providers work with? Providers work alongside tools in G2's Lead Generation Software category, which has 200,000+ reviews. Provider profiles and announcements reference HubSpot (SmartBug Media and demandDrive are HubSpot partners), Clay (demandDrive), Salesloft (durhamlane), and Demandbase (INFUSE).
  • What company sizes review lead generation services providers the most? Small Business accounts for 50.1% of reviews, Mid-Market for 32.8%, and Enterprise for 17.1%, based on 1,100+ reviews from the last 24 months that report a company size.
  • What industries do reviewers come from? Among 1,000+ reviews from the last 24 months that report an industry, Information Technology and Services accounts for 21.0%, Computer Software for 13.3%, Marketing and Advertising for 12.2%, Financial Services for 6.0%, and Hospital & Health Care for 2.9%.
  • What roles do reviewers hold? Among 700+ reviewers from the last 24 months who list a job title, 52.4% hold a founder, owner, C-level, VP, head of, or director title (31.2% at founder, owner, or C-level), and 13.6% hold a sales, revenue, or business development title.
  • How satisfied are reviewers? Across 70+ providers in G2's Fall 2026 Grid Report, category averages are 93% for likelihood to recommend, 95% for ease of doing business, 95% for communication skills, 96% for professionalism, 95% for responsiveness, 93% for ability to execute, and 93% for expertise of team, with an average Net Promoter Score of 81.