Formstack Forms alternatives: 3 open-source picks
Formstack Forms costs $99/mo — $1,188 a year. These 3 alternatives replace it for $0, led by Budibase, Formbricks and HeyForm. All 3 are open source. License, stars and last commit checked by hand on 2026-08-29. No trials, no crippled tiers.
Forms, approvals, and automations in one box; you supply the box
Open-source surveys and experience management for in-app, website, and link-based forms
licenseAGPL-3.0 (+EE)
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
Modern Typeform-style one-question-at-a-time forms with a clean builder. Docker compose up and go.
licenseAGPL-3.0
runsyour server
setupnot verified by us yet — check the repo README
facts verified 2026-08-29
What each one is, in full: Budibase · Formbricks · HeyForm
last updated 2026-08-29 · no votes, no pay-to-list · just what's real
the usual suspects · recommended everywhere, rejected here
NocoDBCommunity forms are usable, but conditional fields, validation, redirects, and the richer workflow layer are paid
how to choose a Formstack Forms alternative
Easiest to get running
Formbricks — a one-click install, no server to maintain.
Most proven
Budibase, with 28,000 GitHub stars — the largest community of the 3, which usually means more answers when something breaks.
what you give up by leaving Formstack Forms
- enterprise compliance, workflow, integrations, support, and regulated deployments
- advanced branching
- payment and CRM integrations
- large template libraries
- enterprise compliance
None of the picks above covers all of it. The full verdict says which gaps matter.
Formstack Forms alternatives at a glance
| tool | license | running it | platforms | stars | active |
|---|---|---|---|---|---|
| Budibase | open source | docker to self-host | web, self-hosted | 28,000 | 2026-08 |
| Formbricks | AGPL-3.0 (+EE) | one-click install | self-hosted, web | 11,000 | 2026-08 |
| HeyForm | AGPL-3.0 | one-click install | self-hosted, web | 8,000 | 2026-08 |
why people still pay for Formstack Forms
People still pay for Formstack Forms because a basic form is trivial; people pay when the form feeds a dependable business workflow and never loses a response. The recurring cost buys spam control, email delivery, storage, exports, accessibility, conditional logic, and integrations, not just the visible interface. If none of that applies to you, any pick above saves $1,188 a year.
questions about switching from Formstack Forms
Is there an open-source alternative to Formstack Forms?
Yes: Budibase, Formbricks, HeyForm. Every tool on this page is open source: no trials, no crippled tiers.
Can open source really replace Formstack Forms?
Our verdict is YES. Budibase (28k stars), Formbricks (11k stars), HeyForm (8k stars) are mature open-source replacements for Formstack Forms — self-host with docker and stop paying $99/mo. The full verdict, and what you give up by switching, is at caniopensourceit.online/formstack-forms.
What is the easiest open-source Formstack Forms alternative to set up?
Formbricks — a one-click install, no server to maintain.
What is the most popular open-source Formstack Forms alternative?
By GitHub stars, Budibase (28,000). Formbricks is next with 11,000.
