Forms for Developers.
The open-source form backend where you bring your own API keys. Store submissions, trigger integrations, and stay in control.
Works with your favorite tools
<form
action="https://osforms.com/api/v1/f/your-slug"
method="POST"
>
<input type="text" name="name" placeholder="Name" required />
<input type="email" name="email" placeholder="Email" required />
<textarea name="message" placeholder="Your message"></textarea>
<button type="submit">Send</button>
</form>Simple 3-step setup.
Go from form to inbox in less than 2 minutes.
Create Endpoint
Get a unique endpoint URL for your form. No configuration needed.
Add to Website
Paste the URL into your <form> action or use our headless API.
Own Your Data
Submissions are stored and forwarded using your own API keys.
One hub. Infinite flows.
Collect data from any source and forward it to your favorite tools.
Powerful features, zero bloat.
Full Privacy & Sovereignty
OSForms is built on the principle of data ownership. We don't lock you into a proprietary cloud. Use your own Resend or Google Sheets keys for direct delivery.
Infinite Integrations
Connect any service via custom webhooks with HMAC signatures for security.
Developer First
Headless by design. Works with React, Vue, Svelte, or plain HTML.
No Database Needed
We handle the storage and validation so you don't have to.
Spam Protection
Enterprise-grade honeypots and validation included for free.
Blazing Fast
Globally distributed edge functions ensure sub-100ms response times.
FAQ
Everything you need to know about OSForms.
Ready to own your form backend?
Join developers building forms without limits. Open source. No lock-in.