Intellistack

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Read 145 Intellistack reviews and testimonials from customers, explore 158 case studies and customer success stories, and watch 42 customer videos to see why companies chose Intellistack as their Electronic Signature

Intellistack (formerly Formstack) has grown into a leading provider of powerful, no-code productivity solutions that help teams do more with less. Across thousands of organizations worldwide, their tools and platform empower users to quickly build custom forms, automate document generation, capture eSignatures, and streamline data-driven processes—all without needing to write a single line of code.

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Customer Rating Review Scorebased on 5079 reference ratings
4.7/5.0 (5079)
  • Market Leader 2025 2025
    Fall 2025Market LeaderDocument Automation Software
  • Top Performer 2025 2025
    Fall 2025Top PerformerElectronic Signature Software
    • Market Leader 2024 2024
      Fall 2024Market LeaderMobile Forms Automation Software
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Featured Testimonials

  • "Having that whole student enrollment process in Formstack and going into Google Sheets is perfect. We partner with a lot of higher education institutions and this process helps us better communicate with them while provide better onboarding to students."

  • "The collections team would not be able to do their job if we could not run our Formstacks with Authorize.Net. We would need to have an entire additional accounts receivable and a second accounts payable person."

  • “Not only has Formstack cut down on the communication and confusion for account managers in terms of making the request, but it has also helped them with follow-up because they are able to use the Formstack dashboard to check on the status of requests.”

Featured Case Studies

  • Nonprofit Creates User-Friendly Website Using Forms

  • ProVirtual Solutions - Customer Case Study

  • Crumbs and Doilies - Customer Case Study

Featured Customer Videos

Additional Intellistack Information & Resources

Read Intellistack Reviews, Testimonials & Customer References from 145 real Intellistack customers.

Browse Intellistack Case Studies, Customer Success Stories, & Customer References from 158 businesses that use Intellistack.

Watch Intellistack Customer Videos to learn why 42 businesses chose Intellistack.

Explore answers to frequently asked questions about Intellistack.