# Top 10 Scalestack Alternatives & Competitors **Average Rating:** 4.8/5 **Total Number of Reviews:** 10 The Sales Intelligence Software solutions below are the most common alternatives that users and reviewers compare with Scalestack. Sales Intelligence Software is a widely used technology, and many people are seeking innovative, time saving software solutions with user, role, and access management, data cleaning/enrichment, and messaging. Other important factors to consider when researching alternatives to Scalestack include data sources and tasks. The best overall Scalestack alternative is GTM Workspace - Powered by ZoomInfo. Other similar apps like Scalestack are Apollo.io, Demandbase One, Instantly, and Lusha. Scalestack alternatives can be found in [Sales Intelligence Software](https://www.g2.com/categories/sales-intelligence) but may also be in [Sales Engagement Software](https://www.g2.com/categories/sales-engagement) or [Account Data Management Software](https://www.g2.com/categories/account-data-management). ## Best Paid & Free Alternatives to Scalestack - [GTM Workspace - Powered by ZoomInfo](https://www.g2.com/products/gtm-workspace-powered-by-zoominfo/reviews) - [Apollo.io](https://www.g2.com/products/apollo-io/reviews) - [Demandbase One](https://www.g2.com/products/demandbase-one/reviews) - [Instantly](https://www.g2.com/products/instantly/reviews) - [Lusha](https://www.g2.com/products/lusha/reviews) - [Reply](https://www.g2.com/products/reply/reviews) - [6sense Sales Intelligence](https://www.g2.com/products/6sense-sales/reviews) - [FlashRev](https://www.g2.com/products/flashrev/reviews) - [Amplemarket](https://www.g2.com/products/amplemarket/reviews) - [AdRoll ABM (Formerly RollWorks)](https://www.g2.com/products/adroll-abm-formerly-rollworks/reviews) ## Top 10 Alternatives to Scalestack Recently Reviewed By G2 Community Browse options below. Based on reviewer data, you can see how Scalestack stacks up to the competition, check reviews from current & previous users in industries like Computer Software, Higher Education, and Marketing and Advertising, and find the best product for your business. ### 1. [GTM Workspace - Powered by ZoomInfo](https://www.g2.com/products/gtm-workspace-powered-by-zoominfo/reviews) By ZoomInfo **Average Rating:** 4.5/5 **Total Reviews:** 9,105 GTM Workspace is a unified sales execution platform that brings together CRM data, ZoomInfo intelligence, engagement history, and buying signals in one consolidated view - so account executives and account managers can manage their entire book of business, prioritize pipeline, and act on the best opportunities without ever switching tools. Categories in common with Scalestack: [Sales Intelligence](https://www.g2.com/categories/sales-intelligence), [AI Sales Assistant](https://www.g2.com/categories/ai-sales-assistant), [Lead Intelligence](https://www.g2.com/categories/lead-intelligence) **Compare:** [Scalestack vs GTM Workspace - Powered by ZoomInfo](https://www.g2.com/compare/gtm-workspace-powered-by-zoominfo-vs-scalestack) **Compare GTM Workspace - Powered by ZoomInfo with other alternatives:** - [GTM Workspace - Powered by ZoomInfo vs Apollo.io](https://www.g2.com/compare/apollo-io-vs-gtm-workspace-powered-by-zoominfo) - [GTM Workspace - Powered by ZoomInfo vs Demandbase One](https://www.g2.com/compare/demandbase-one-vs-gtm-workspace-powered-by-zoominfo) - [GTM Workspace - Powered by ZoomInfo vs Instantly](https://www.g2.com/compare/gtm-workspace-powered-by-zoominfo-vs-instantly) - [GTM Workspace - Powered by ZoomInfo vs Lusha](https://www.g2.com/compare/gtm-workspace-powered-by-zoominfo-vs-lusha) - [GTM Workspace - Powered by ZoomInfo vs Reply](https://www.g2.com/compare/gtm-workspace-powered-by-zoominfo-vs-reply) - [GTM Workspace - Powered by ZoomInfo vs 6sense Sales Intelligence](https://www.g2.com/compare/6sense-sales-vs-gtm-workspace-powered-by-zoominfo) - [GTM Workspace - Powered by ZoomInfo vs FlashRev](https://www.g2.com/compare/flashrev-vs-gtm-workspace-powered-by-zoominfo) - [GTM Workspace - Powered by ZoomInfo vs Amplemarket](https://www.g2.com/compare/amplemarket-vs-gtm-workspace-powered-by-zoominfo) - [GTM Workspace - Powered by ZoomInfo vs AdRoll ABM (Formerly RollWorks)](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-gtm-workspace-powered-by-zoominfo) ### 2. [Apollo.io](https://www.g2.com/products/apollo-io/reviews) By Apollo.io **Average Rating:** 4.7/5 **Total Reviews:** 9,703 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. Categories in common with Scalestack: [Sales Intelligence](https://www.g2.com/categories/sales-intelligence), [AI Sales Assistant](https://www.g2.com/categories/ai-sales-assistant), [Lead Intelligence](https://www.g2.com/categories/lead-intelligence) **Compare:** [Scalestack vs Apollo.io](https://www.g2.com/compare/apollo-io-vs-scalestack) **Compare Apollo.io with other alternatives:** - [Apollo.io vs GTM Workspace - Powered by ZoomInfo](https://www.g2.com/compare/apollo-io-vs-gtm-workspace-powered-by-zoominfo) - [Apollo.io vs Demandbase One](https://www.g2.com/compare/apollo-io-vs-demandbase-one) - [Apollo.io vs Instantly](https://www.g2.com/compare/apollo-io-vs-instantly) - [Apollo.io vs Lusha](https://www.g2.com/compare/apollo-io-vs-lusha) - [Apollo.io vs Reply](https://www.g2.com/compare/apollo-io-vs-reply) - [Apollo.io vs 6sense Sales Intelligence](https://www.g2.com/compare/6sense-sales-vs-apollo-io) - [Apollo.io vs FlashRev](https://www.g2.com/compare/apollo-io-vs-flashrev) - [Apollo.io vs Amplemarket](https://www.g2.com/compare/amplemarket-vs-apollo-io) - [Apollo.io vs AdRoll ABM (Formerly RollWorks)](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-apollo-io) ### 3. [Demandbase One](https://www.g2.com/products/demandbase-one/reviews) By Demandbase **Average Rating:** 4.4/5 **Total Reviews:** 1,988 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. Categories in common with Scalestack: [Sales Intelligence](https://www.g2.com/categories/sales-intelligence), [Account-Based Orchestration Platforms](https://www.g2.com/categories/account-based-orchestration-platforms), [AI Sales Assistant](https://www.g2.com/categories/ai-sales-assistant), [Lead Intelligence](https://www.g2.com/categories/lead-intelligence) **Compare:** [Scalestack vs Demandbase One](https://www.g2.com/compare/demandbase-one-vs-scalestack) **Compare Demandbase One with other alternatives:** - [Demandbase One vs GTM Workspace - Powered by ZoomInfo](https://www.g2.com/compare/demandbase-one-vs-gtm-workspace-powered-by-zoominfo) - [Demandbase One vs Apollo.io](https://www.g2.com/compare/apollo-io-vs-demandbase-one) - [Demandbase One vs Instantly](https://www.g2.com/compare/demandbase-one-vs-instantly) - [Demandbase One vs Lusha](https://www.g2.com/compare/demandbase-one-vs-lusha) - [Demandbase One vs Reply](https://www.g2.com/compare/demandbase-one-vs-reply) - [Demandbase One vs 6sense Sales Intelligence](https://www.g2.com/compare/6sense-sales-vs-demandbase-one) - [Demandbase One vs FlashRev](https://www.g2.com/compare/demandbase-one-vs-flashrev) - [Demandbase One vs Amplemarket](https://www.g2.com/compare/amplemarket-vs-demandbase-one) - [Demandbase One vs AdRoll ABM (Formerly RollWorks)](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-demandbase-one) ### 4. [Instantly](https://www.g2.com/products/instantly/reviews) By Instantly **Average Rating:** 4.8/5 **Total Reviews:** 4,134 Instantly Helps Automate Your B2B Email Outreach Forever. Reviewers say compared to Scalestack, Instantly is: - Better at support - More usable - Better at meeting requirements Categories in common with Scalestack: [Sales Intelligence](https://www.g2.com/categories/sales-intelligence), [AI Sales Assistant](https://www.g2.com/categories/ai-sales-assistant), [Lead Intelligence](https://www.g2.com/categories/lead-intelligence) **Compare:** [Scalestack vs Instantly](https://www.g2.com/compare/instantly-vs-scalestack) **Compare Instantly with other alternatives:** - [Instantly vs GTM Workspace - Powered by ZoomInfo](https://www.g2.com/compare/gtm-workspace-powered-by-zoominfo-vs-instantly) - [Instantly vs Apollo.io](https://www.g2.com/compare/apollo-io-vs-instantly) - [Instantly vs Demandbase One](https://www.g2.com/compare/demandbase-one-vs-instantly) - [Instantly vs Lusha](https://www.g2.com/compare/instantly-vs-lusha) - [Instantly vs Reply](https://www.g2.com/compare/instantly-vs-reply) - [Instantly vs 6sense Sales Intelligence](https://www.g2.com/compare/6sense-sales-vs-instantly) - [Instantly vs FlashRev](https://www.g2.com/compare/flashrev-vs-instantly) - [Instantly vs Amplemarket](https://www.g2.com/compare/amplemarket-vs-instantly) - [Instantly vs AdRoll ABM (Formerly RollWorks)](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-instantly) ### 5. [Lusha](https://www.g2.com/products/lusha/reviews) By Lusha **Average Rating:** 4.3/5 **Total Reviews:** 1,665 Lusha is an AI Sales Intelligence & Prospect Streaming. Lusha combines reliable contact data with AI-powered prospecting. AI Prospect Playlists automatically generate and refresh lead lists based on your ideal customer profile- so you can stop rebuilding static lists and focus on engaging high-quality prospects, every day. Categories in common with Scalestack: [Sales Intelligence](https://www.g2.com/categories/sales-intelligence), [AI Sales Assistant](https://www.g2.com/categories/ai-sales-assistant), [Lead Intelligence](https://www.g2.com/categories/lead-intelligence) **Compare:** [Scalestack vs Lusha](https://www.g2.com/compare/lusha-vs-scalestack) **Compare Lusha with other alternatives:** - [Lusha vs GTM Workspace - Powered by ZoomInfo](https://www.g2.com/compare/gtm-workspace-powered-by-zoominfo-vs-lusha) - [Lusha vs Apollo.io](https://www.g2.com/compare/apollo-io-vs-lusha) - [Lusha vs Demandbase One](https://www.g2.com/compare/demandbase-one-vs-lusha) - [Lusha vs Instantly](https://www.g2.com/compare/instantly-vs-lusha) - [Lusha vs Reply](https://www.g2.com/compare/lusha-vs-reply) - [Lusha vs 6sense Sales Intelligence](https://www.g2.com/compare/6sense-sales-vs-lusha) - [Lusha vs FlashRev](https://www.g2.com/compare/flashrev-vs-lusha) - [Lusha vs Amplemarket](https://www.g2.com/compare/amplemarket-vs-lusha) - [Lusha vs AdRoll ABM (Formerly RollWorks)](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-lusha) ### 6. [Reply](https://www.g2.com/products/reply/reviews) By Reply.io **Average Rating:** 4.6/5 **Total Reviews:** 1,551 Sales automation software that puts your outreach on autopilot, while still making each communication personal. Categories in common with Scalestack: [Sales Intelligence](https://www.g2.com/categories/sales-intelligence), [AI Sales Assistant](https://www.g2.com/categories/ai-sales-assistant), [Lead Intelligence](https://www.g2.com/categories/lead-intelligence) **Compare:** [Scalestack vs Reply](https://www.g2.com/compare/reply-vs-scalestack) **Compare Reply with other alternatives:** - [Reply vs GTM Workspace - Powered by ZoomInfo](https://www.g2.com/compare/gtm-workspace-powered-by-zoominfo-vs-reply) - [Reply vs Apollo.io](https://www.g2.com/compare/apollo-io-vs-reply) - [Reply vs Demandbase One](https://www.g2.com/compare/demandbase-one-vs-reply) - [Reply vs Instantly](https://www.g2.com/compare/instantly-vs-reply) - [Reply vs Lusha](https://www.g2.com/compare/lusha-vs-reply) - [Reply vs 6sense Sales Intelligence](https://www.g2.com/compare/6sense-sales-vs-reply) - [Reply vs FlashRev](https://www.g2.com/compare/flashrev-vs-reply) - [Reply vs Amplemarket](https://www.g2.com/compare/amplemarket-vs-reply) - [Reply vs AdRoll ABM (Formerly RollWorks)](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-reply) ### 7. [6sense Sales Intelligence](https://www.g2.com/products/6sense-sales/reviews) By 6sense **Average Rating:** 3.9/5 **Total Reviews:** 1,048 6sense Sales Intelligence for Sales offers a single seamless digital destination where sellers can acquire account and buying team intelligence fast. It helps streamline workflows, uncover hidden sales opportunities, accurately identify anonymous buyer intent data, and prioritize accounts that are ready to buy right now. Categories in common with Scalestack: [Sales Intelligence](https://www.g2.com/categories/sales-intelligence), [AI Sales Assistant](https://www.g2.com/categories/ai-sales-assistant), [Lead Intelligence](https://www.g2.com/categories/lead-intelligence) **Compare:** [Scalestack vs 6sense Sales Intelligence](https://www.g2.com/compare/6sense-sales-vs-scalestack) **Compare 6sense Sales Intelligence with other alternatives:** - [6sense Sales Intelligence vs GTM Workspace - Powered by ZoomInfo](https://www.g2.com/compare/6sense-sales-vs-gtm-workspace-powered-by-zoominfo) - [6sense Sales Intelligence vs Apollo.io](https://www.g2.com/compare/6sense-sales-vs-apollo-io) - [6sense Sales Intelligence vs Demandbase One](https://www.g2.com/compare/6sense-sales-vs-demandbase-one) - [6sense Sales Intelligence vs Instantly](https://www.g2.com/compare/6sense-sales-vs-instantly) - [6sense Sales Intelligence vs Lusha](https://www.g2.com/compare/6sense-sales-vs-lusha) - [6sense Sales Intelligence vs Reply](https://www.g2.com/compare/6sense-sales-vs-reply) - [6sense Sales Intelligence vs FlashRev](https://www.g2.com/compare/6sense-sales-vs-flashrev) - [6sense Sales Intelligence vs Amplemarket](https://www.g2.com/compare/6sense-sales-vs-amplemarket) - [6sense Sales Intelligence vs AdRoll ABM (Formerly RollWorks)](https://www.g2.com/compare/6sense-sales-vs-adroll-abm-formerly-rollworks) ### 8. [FlashRev](https://www.g2.com/products/flashrev/reviews) By FlashIntel **Average Rating:** 4.6/5 **Total Reviews:** 666 FlashIntel, a product of FlashIntel Global, is a comprehensive revenue acceleration platform that integrates sales intelligence and engagement capabilities into one unified interface. With access to a vast B2B intelligence database and 30+ custom filters, it enables businesses to discover and engage with their ideal customers effectively. By offering features like automated verification tools, data enrichment, social intent analysis, sequencing, parallel dialing and seamless CRM integration, FlashInfo empowers businesses to accelerate revenue generation and growth efficiently. Reviewers say compared to Scalestack, FlashRev is: - More usable - Better at meeting requirements - Better at support Categories in common with Scalestack: [Sales Intelligence](https://www.g2.com/categories/sales-intelligence), [AI Sales Assistant](https://www.g2.com/categories/ai-sales-assistant), [Lead Intelligence](https://www.g2.com/categories/lead-intelligence) **Compare:** [Scalestack vs FlashRev](https://www.g2.com/compare/flashrev-vs-scalestack) **Compare FlashRev with other alternatives:** - [FlashRev vs GTM Workspace - Powered by ZoomInfo](https://www.g2.com/compare/flashrev-vs-gtm-workspace-powered-by-zoominfo) - [FlashRev vs Apollo.io](https://www.g2.com/compare/apollo-io-vs-flashrev) - [FlashRev vs Demandbase One](https://www.g2.com/compare/demandbase-one-vs-flashrev) - [FlashRev vs Instantly](https://www.g2.com/compare/flashrev-vs-instantly) - [FlashRev vs Lusha](https://www.g2.com/compare/flashrev-vs-lusha) - [FlashRev vs Reply](https://www.g2.com/compare/flashrev-vs-reply) - [FlashRev vs 6sense Sales Intelligence](https://www.g2.com/compare/6sense-sales-vs-flashrev) - [FlashRev vs Amplemarket](https://www.g2.com/compare/amplemarket-vs-flashrev) - [FlashRev vs AdRoll ABM (Formerly RollWorks)](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-flashrev) ### 9. [Amplemarket](https://www.g2.com/products/amplemarket/reviews) By Amplemarket **Average Rating:** 4.6/5 **Total Reviews:** 657 Amplemarket is your AI-powered sales assistant. Amplemarket Sales Assistant will take care of all your sales tasks. From prospecting, to outreach, follow-ups and scheduling of meetings. Categories in common with Scalestack: [Sales Intelligence](https://www.g2.com/categories/sales-intelligence), [AI Sales Assistant](https://www.g2.com/categories/ai-sales-assistant), [Lead Intelligence](https://www.g2.com/categories/lead-intelligence) **Compare:** [Scalestack vs Amplemarket](https://www.g2.com/compare/amplemarket-vs-scalestack) **Compare Amplemarket with other alternatives:** - [Amplemarket vs GTM Workspace - Powered by ZoomInfo](https://www.g2.com/compare/amplemarket-vs-gtm-workspace-powered-by-zoominfo) - [Amplemarket vs Apollo.io](https://www.g2.com/compare/amplemarket-vs-apollo-io) - [Amplemarket vs Demandbase One](https://www.g2.com/compare/amplemarket-vs-demandbase-one) - [Amplemarket vs Instantly](https://www.g2.com/compare/amplemarket-vs-instantly) - [Amplemarket vs Lusha](https://www.g2.com/compare/amplemarket-vs-lusha) - [Amplemarket vs Reply](https://www.g2.com/compare/amplemarket-vs-reply) - [Amplemarket vs 6sense Sales Intelligence](https://www.g2.com/compare/6sense-sales-vs-amplemarket) - [Amplemarket vs FlashRev](https://www.g2.com/compare/amplemarket-vs-flashrev) - [Amplemarket vs AdRoll ABM (Formerly RollWorks)](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-amplemarket) ### 10. [AdRoll ABM (Formerly RollWorks)](https://www.g2.com/products/adroll-abm-formerly-rollworks/reviews) By NextRoll **Average Rating:** 4.3/5 **Total Reviews:** 656 AdRoll ABM (Formerly RollWorks) seamlessly combines precise B2B audience segmentation and targeting solutions with a cross-channel demand-side platform into a single application. Powered by InIQ and BidIQ, our AI buyer insight engine and bid optimization engine, AdRoll ABM offers a powerful, yet easy-to-use, platform for B2B marketers to unlock precision to drive pipeline and revenue. Categories in common with Scalestack: [Sales Intelligence](https://www.g2.com/categories/sales-intelligence), [Account-Based Orchestration Platforms](https://www.g2.com/categories/account-based-orchestration-platforms), [Lead Intelligence](https://www.g2.com/categories/lead-intelligence) **Compare:** [Scalestack vs AdRoll ABM (Formerly RollWorks)](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-scalestack) **Compare AdRoll ABM (Formerly RollWorks) with other alternatives:** - [AdRoll ABM (Formerly RollWorks) vs GTM Workspace - Powered by ZoomInfo](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-gtm-workspace-powered-by-zoominfo) - [AdRoll ABM (Formerly RollWorks) vs Apollo.io](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-apollo-io) - [AdRoll ABM (Formerly RollWorks) vs Demandbase One](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-demandbase-one) - [AdRoll ABM (Formerly RollWorks) vs Instantly](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-instantly) - [AdRoll ABM (Formerly RollWorks) vs Lusha](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-lusha) - [AdRoll ABM (Formerly RollWorks) vs Reply](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-reply) - [AdRoll ABM (Formerly RollWorks) vs 6sense Sales Intelligence](https://www.g2.com/compare/6sense-sales-vs-adroll-abm-formerly-rollworks) - [AdRoll ABM (Formerly RollWorks) vs FlashRev](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-flashrev) - [AdRoll ABM (Formerly RollWorks) vs Amplemarket](https://www.g2.com/compare/adroll-abm-formerly-rollworks-vs-amplemarket) --- ## Scalestack Alternatives FAQs ### How does Scalestack compare to GTM Workspace - Powered by ZoomInfo? According to G2 data, [Scalestack](https://www.g2.com/products/scalestack/reviews) holds a higher average rating of 4.8/5 from 10 reviews compared to [GTM Workspace - Powered by ZoomInfo](https://www.g2.com/products/gtm-workspace-powered-by-zoominfo/reviews), which has a 4.5/5 rating across 9,102 reviews. Scalestack scores 9.3 in Usability and Ease of Setup, outperforming GTM Workspace's scores of 8.8 and 8.9 respectively, indicating a smoother initial user experience. Scalestack also leads by 0.6 points in Meeting Requirements (9.2 vs 8.7) and by 0.6 points in Support (9.3 vs 8.7), reflecting stronger alignment with user needs and better customer service. GTM Workspace, however, offers additional dimension scores in Ease of Admin (8.7) and Easier to Do Business With (8.6), where Scalestack data is not available for comparison. Sentiment analysis reveals that Scalestack users highlight its AI technology, CRM integration, automation, and flexibility, with 2 mentions each of time-saving and AI benefits, while GTM Workspace users emphasize contact information quality (353 mentions), ease of use (349 mentions), and data accuracy (325 mentions). GTM Workspace also has a larger volume of reviews noting features like lead generation (280 mentions) and CRM integration (158 mentions). However, GTM Workspace faces more frequent criticism for inaccurate or outdated data (over 200 mentions) and higher pricing concerns (84 mentions), whereas Scalestack's main drawbacks include a learning curve and complexity in setup. Overall, Scalestack is favored for its superior usability, setup ease, and support quality, especially for organizations seeking customizable, AI-driven CRM automation. GTM Workspace excels in data breadth and lead generation features but contends with data accuracy and pricing challenges. ### What are the best alternatives to Scalestack? The best alternatives to Scalestack include [GTM Workspace - Powered by ZoomInfo](https://www.g2.com/products/gtm-workspace-powered-by-zoominfo/reviews) (4.5/5 stars, 9,102 reviews), [Apollo.io](https://www.g2.com/products/apollo-io/reviews) (4.7/5 stars, 9,667 reviews), [Demandbase One](https://www.g2.com/products/demandbase-one/reviews) (4.4/5 stars, 1,970 reviews), and [Instantly](https://www.g2.com/products/instantly/reviews) (4.8/5 stars, 4,115 reviews). These platforms offer robust sales intelligence capabilities with larger user bases and extensive feature sets. ### What features do alternatives offer that Scalestack does not? Scalestack reviewers noted a lack of extensive pre-built workflow templates and limited detailed customization options compared to alternatives. Additionally, Scalestack has a steeper learning curve and some complexity in setup and integration, which alternatives address with easier onboarding and more intuitive interfaces. ### Which Sales Intelligence tools do reviewers recommend instead of Scalestack? Reviewers recommend [GTM Workspace - Powered by ZoomInfo](https://www.g2.com/products/gtm-workspace-powered-by-zoominfo/reviews) for its comprehensive data quality, AI-driven buying signals, and unified sales execution platform that consolidates multiple tools, saving users up to 10 hours weekly. [Apollo.io](https://www.g2.com/products/apollo-io/reviews) is favored for its massive B2B database of over 210 million contacts, integrated outreach automation, and ease of use, providing an all-in-one solution for prospecting and engagement. [Demandbase One](https://www.g2.com/products/demandbase-one/reviews) is recommended for its strong account-based marketing capabilities, intent data integration, and seamless sales-marketing alignment. [Instantly](https://www.g2.com/products/instantly/reviews) is praised for its email outreach automation, unlimited sending accounts, and effective email warm-up features that enhance deliverability and campaign scalability. These alternatives outperform Scalestack in ease of use, data comprehensiveness, and automation features according to G2 user reviews. ### Why do users choose GTM Workspace - Powered by ZoomInfo over Scalestack? Users choose [GTM Workspace - Powered by ZoomInfo](https://www.g2.com/products/gtm-workspace-powered-by-zoominfo/reviews) over Scalestack primarily due to its extensive and comprehensive contact database, which is frequently praised with 353 mentions of high-quality contact information. GTM Workspace's platform is recognized for significantly enhancing lead generation efficiency, with 280 mentions highlighting its effectiveness in sourcing and qualifying leads. The product's ease of use is also a major factor, supported by 349 mentions, making it accessible for large sales teams and diverse user bases. Additionally, GTM Workspace offers robust features such as intent data (152 mentions) and seamless CRM integrations (158 mentions), which streamline sales workflows and improve targeting precision. Its real-time updates on company activities and buying signals help users prioritize high-value opportunities effectively. The platform's AI-driven insights and tools like the Chrome extension for LinkedIn prospecting further contribute to its appeal. Despite some concerns about data accuracy and pricing, users value GTM Workspace's ability to consolidate sales intelligence into a unified workspace, saving time and improving outreach quality. 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