#1
Open-source form builder to create, embed, and share forms with unlimited submissions, notifications, integrations, file uploads, and basic analytics.
3.6k stars534 forkslast commit Actively maintained
4 self-hosted Formstack alternatives
Formstack is a no-code SaaS platform for building online forms and surveys, collecting and routing data, automating workflows and approvals, integrating with external systems, and generating documents and e-signatures.
Alternatives to Formstack
#2
Open-source form and data management platform with a drag-and-drop builder, embeddable form renderer, and REST API for submissions, resources, and workflows.
2.3k stars767 forksOSL-3.0last commit Actively maintained
Open-source platform for guided web interviews that collect user input, run logic, and generate documents (PDF, DOCX, RTF) or integrate with external services via APIs.
984 stars309 forksMITlast commit Actively maintained
#4
Open source Typeform-style multi-step forms and surveys built with a JavaScript library, featuring conditional logic, theming, localization, and flexible submission endpoints.
777 stars40 forksApache-2.0last commit Slowing down
What replacing Formstack actually involves
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 3 of 4 shipped a commit in the last six months. Licences in this list: OSL-3.0, MIT, Apache-2.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Automation & Workflow Builders (Low-code).
