Can I open-source Formstack Forms?
YES · mature open-source replacementYes. 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.
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.
xenterprise compliance, workflow, integrations, support, and regulated deployments
xadvanced branching
xpayment and CRM integrations
xlarge template libraries
xenterprise compliance
These projects already replace it, free.
BBudibaseForms, approvals, and automations in one box; you supply the boxopen source↗FFormbricksOpen-source surveys and experience management for in-app, website, and link-based formsopen source↗HHeyFormModern Typeform-style one-question-at-a-time forms with a clean builder. Docker compose up and go.open source↗What each one is, in full: Budibase · Formbricks · HeyForm
all 3 open-source alternatives to Formstack Forms →· no votes, no pay-to-list · just what's real
Formstack Forms pricing
| plan | monthly | annual (per mo) | what you get |
|---|---|---|---|
| forms | $99/workspace | $83/workspace | 1 form builder, 25 forms, 1,000 submissions per form, and 2GB storage |
| suite | $299/workspace | $250/workspace | 3 form builders, 100 forms, 5,000 submissions per form, 10GB storage, unlimited document senders and unlimited e-signature senders |
| salesforce solutions | custom | — | Salesforce-native forms, documents and signatures; limits and price are custom |
| enterprise | custom | — | Unlimited users and submissions; other allowances and commercial terms are custom |
free tierno free tier; 14-day trial
billingmonthly + annual (annual is approximately 2 months free)
hidden costsAdditional users, submissions and features cost extra at unpublished rates; HIPAA compliance is a paid add-on on Forms and Suite.
verified 2026-08-12 · source ↗
Can I open-source Formstack Forms?
Yes. Budibase replaces Formstack Forms today — self-host it on your own server or machine with no subscription. The full list of open-source alternatives is on this page.
How much does Formstack Forms cost?
Formstack Forms costs about $99/month (Forms, checked 2026-07-31), which is $1188 per year. That's what you save by replacing it with open source.
What do I lose by replacing Formstack Forms?
Honestly: enterprise compliance, workflow, integrations, support, and regulated deployments; advanced branching; payment and CRM integrations; large template libraries; enterprise compliance. If any of those are load-bearing for you, keep paying.
Is there an open-source alternative to Formstack Forms?
Yes: Budibase (Forms, approvals, and automations in one box; you supply the box) Formbricks (Open-source surveys and experience management for in-app, website, and link-based forms) HeyForm (Modern Typeform-style one-question-at-a-time forms with a clean builder. Docker compose up and go.) All 3 curated open-source alternatives are at caniopensourceit.online/formstack-forms/alternatives.