Top 10 TheirStack Alternatives & Competitors

Top 10 Alternatives to TheirStack Recently Reviewed By G2 Community

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Apollo.io
By Apollo.io
4.7/5
(9,652)
Product Description
Apollo is an all-in-one sales intelligence platform with tools to help you prospect, engage, and drive more revenue. Sellers and marketers use Apollo to discover more customers in market, connect with contacts, and establish a modern go-to-market strategy. Apollo's B2B Database includes over 210M contacts and 35M companies with robust and accurate data. Teams leverage Apollo’s Engagement Suite to scale outbound activity and sequences effectively. Finally, up-level your entire go-to-market processes with Apollo's Intelligence Engine with recommendations and analytics that help you close. Founded in 2015, Apollo.io is a leading data intelligence and sales engagement platform trusted by over 10,000 customers, from rapidly growing startups to global enterprises.
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Reviewers say compared to TheirStack, Apollo.io is:
Better at meeting requirements
Categories in common with TheirStack:
Lead Mining

Similarweb
By Similarweb
4.4/5
(1,166)
Product Description
Digital is now the most important driver of growth and profitability for just about every business. Similarweb is a platform that gives our customers a true 360 degree view of all digital activity across customers, prospects, partners, and competition. The resulting insights give our customers — who are some of the world’s biggest brands — a digital edge that helps them beat their competition and win their markets.
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Categories in common with TheirStack:
Market Intelligence

GTM Workspace - Powered by ZoomInfo
By ZoomInfo
4.5/5
(9,096)
Product Description
Find your next customer with ZoomInfo Sales, the biggest, most accurate, and most frequently refreshed database of contact and company insights, intelligence, and purchasing intent data, all in one, modern go-to-market platform.
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Categories in common with TheirStack:
Market Intelligence
Lead Mining

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G2 Advertising
Get 2x conversion than Google Ads with G2 Advertising!
G2 Advertising places your product in premium positions on high-traffic pages and on targeted competitor pages to reach buyers at key comparison moments.
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Demandbase One
By Demandbase
4.4/5
(1,947)
Product Description
The biggest and fastest growing companies in the world rely on Demandbase to drive their ABM and ABX strategies and to maximize their go-to-market performance. With the Demandbase ABX Cloud, fueled by our Account Intelligence, you have one platform to connect your 1st and 3rd party data for one view of the account, making it easy for revenue teams to stay coordinated across the entire buying journey, from prospect to customer.
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Categories in common with TheirStack:
Market Intelligence
Lead Mining

CUFinder
By CUFinder
4.8/5
(988)
Product Description
Unleash the full potential of your B2B, B2C, and even local business with CUFinder - the all-in-one platform powered by AI for lead generation and real-time data enrichment. CUFinder equips you with a massive global database of over +262M companies and +419M contacts associated with +5K industries, boasting an impressive 98% data accuracy. Its suite of powerful engines allows you to discover targeted leads, decision-makers, managers, and any info you can think of based on your specific needs! Enrich your sales pipeline with 27 data enrichment services, user-friendly tools, and seamless CRM integrations. Manage your sales team effectively with built-in team management features, and leverage the convenience of Chrome extension functionalities along with fair prices and customizable plans to fit any budget and empower your sales success across all business categories.
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Reviewers say compared to TheirStack, CUFinder is:
Better at meeting requirements
More usable
Easier to set up
Categories in common with TheirStack:
Lead Mining

Apify
By Apify
4.7/5
(480)
Product Description
Apify is a web scraping and automation platform and turn websites into an API.
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Reviewers say compared to TheirStack, Apify is:
Better at meeting requirements
Categories in common with TheirStack:
Market Intelligence
Lead Mining

Lead411
By Lead411
4.5/5
(478)
Product Description
Lead411 offers a comprehensive data platform fueled by Lead Intelligence. Lead411 provides verified company and contact data including verified emails, mobile direct dials, and email/SMS campaign outreach.
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Categories in common with TheirStack:
Market Intelligence
Lead Mining

G2 Marketing Solutions
By G2
4.6/5
(5,513)
Product Description
G2 Marketing Solutions is a buyer intelligence and demand generation platform that enables businesses to reach and engage software buyers who are actively researching solutions. Built on G2’s marketplace, which attracts millions of buyers each year, the platform provides access to verified reviews, buyer activity data, and insights into how customers evaluate products, categories, and competitors. The platform includes capabilities such as Buyer Intent data, product profiles, review collection, and market intelligence to help organizations identify in-market accounts, improve visibility, and support go-to-market strategies. By leveraging real-time buyer behavior signals and integrating with sales and marketing tools, businesses can prioritize outreach, align with buyer readiness, and drive more efficient pipeline generation.
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Reviewers say compared to TheirStack, G2 Marketing Solutions is:
Better at meeting requirements
Categories in common with TheirStack:
Market Intelligence

Instantly
By Instantly
4.8/5
(4,094)
Product Description
Instantly Helps Automate Your B2B Email Outreach Forever.
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Reviewers say compared to TheirStack, Instantly is:
Better at meeting requirements
More usable
Categories in common with TheirStack:
Lead Mining