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OpnForm

Open source forms with a generous free tier

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What OpnForm is

An open source form builder. You create contact forms, surveys and registration forms, then share a link or embed them, with AI help for building the structure.

The free plan is unusually permissive on volume.

What you can do with it

  • Build contact and registration forms
  • Run surveys and internal collection
  • Embed forms in a site or product
  • Use AI to generate form structure
  • Collect unlimited responses on the free plan
  • Self-host if you want control

Who it is for

  • Entrepreneurs and developers
  • Operations staff
  • Community organisations
  • Teams needing free form collection

What to watch out for

  • Premium features, branding removal, team collaboration and integrations may need a paid plan
  • Self-hosting means you run and secure it yourself
  • Form data is often personal data: consent, retention and access still apply
  • Being open source helps transparency but does not remove compliance duties

Pros & cons

✓ What we like

  • Open source and self-hostable
  • Generous free plan
  • AI form building
  • Embedding supported

! What to watch out for

  • Some features need a paid plan
  • Self-hosting is your responsibility

FAQ

What is it for?

Creating contact forms, surveys, registration forms and embedded forms.

Is the free plan limited?

Volume is generous, but branding, collaboration and integrations may require a paid plan.

What should I prepare?

What you need to collect and a privacy notice for respondents.

Last reviewed: 2026-09-15

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