OpnForm

OpnForm is an online form builder that lets you collect unlimited responses, even on its free plan. It's for anyone who needs to create forms or surveys without worrying about submission caps. A key feature is its flexibility. You can use their EU-based cloud service or self-host the entire platform to maintain complete control over your data.

The form builder is designed to be fast and straightforward. You can drag and drop fields to create multi-page or single-page forms. It offers two distinct styles: a classic layout and a conversational, one-question-at-a-time experience. You can also apply custom themes, colors, and fonts to match your brand.

It includes all the features you'd expect from a modern builder.

• Conditional logic: Show or hide fields based on user answers.
• Calculations: Use computed fields to perform calculations.
• Answer piping: Reference previous answers in later questions.
• AI assistance: Get optional help when building your forms.
• Custom branding: Remove OpnForm branding on paid plans.

Connect your forms to other tools to automate your work. OpnForm integrates directly with services like Slack, Discord, Google Sheets, and Zapier. You can also accept payments through Stripe. For custom workflows, it provides webhooks and a REST API.

Because OpnForm is fully open-source, it's a good choice for organizations with strict privacy and security requirements. Self-hosting gives you full data ownership and control. The platform is GDPR-friendly and supports security features like SSO, SAML, and two-factor authentication.