Forms and surveys decision
Formsite
A capable developer can reproduce a useful subset (hosted forms, submissions, embeds, exports) in-house, but Formsite's scale, extensive integrations, payments handling, and production polish make a full replacement costly to match.
Visit website↗Open-source builds that already do this
Every project below is open source and already does this job today. Fork one, self-host it, or take the parts you need — the build prompt further down assumes an empty file, and this is the shortcut past that. Licences differ; check the one on each card before you ship.
What a replacement has to do
- Provide a web UI to design forms, serve a public form endpoint, store submissions, view/export results, and send email notifications or webhook integrations.
What it still won’t have
- 2000+ third‑party integrations out of the box
- Hosted scale / proven uptime for high submission volumes
- Built-in payment processor integrations and PCI handling
- Ready-made templates, themes, and advanced workflow features
- 24/7/365 vendor support and uptime guarantees
What remains hard
- Infrastructure at scale
Processed over $500 Million in payments
- Infrastructure at scale
Billions of forms submitted
First-year cost
Keep paying
Paying is—cheaper in year one.
On cash alone, building overtakes the subscription at 1 seat.
Money you would actually spend
Time you would spend
—
What you would spend
What we assumed
The verdict above measures whether you could build it. This one is only about money.
Runnable build prompt
Build a minimal hosted form service using React for the admin UI, a JSON schema-based form renderer, Node.js + Express for the API, PostgreSQL for form and submission storage, AWS S3 for file uploads, and Stripe for optional payments. In scope: (1) form creation/editing (save JSON schema), (2) public form endpoints with server-side validation and file uploads to S3, (3) submission storage and a web UI to list/export submissions as CSV, (4) email notifications and a webhook delivery retry queue, (5) an embeddable script/snippet and basic theming. Out of scope: drag-and-drop WYSIWYG builder with complex conditional-visual editing, multi-tenant billing UI, and 2000+ third-party integrations. Include authentication for the admin UI, input validation, error handling, unit tests for API routes, and basic end-to-end tests for the submit → store → notify flow.
How we checked
How the score was reached
- Partly verdict base52
- An open-source build was found+5
- 5 cited sources+3
- Price verified on pricing page+3
- Hard moats found in the evidence-3
- Evidence score60
The base comes from the verdict. Everything under it is a check that either happened or did not, and each one is a fact frozen in this record rather than a judgement made at render time — so the same evidence always produces the same number.
How scoring works →Cited sources · 5
Every page the run actually retrieved.
- official productFormsite - Online Form Builder
- official pricingFormsite Pricing
- official docsFormsite Features
- open sourceLimeSurvey/LimeSurvey
- open sourceOpnForm/OpnForm
Integrity checks
What held up, and what did not.
