Open Source Alternatives to Formspark

A form backend service that connects website forms to email. It allows developers, agencies, freelancers, and marketing teams to collect form submissions without managing servers, databases, or APIs. The service supports static sites and does not require JavaScript for operation. Key capabilities include submission viewing via an online dashboard or email, data exports in CSV and JSON formats, and integrations with Slack, Zapier, and Make. It features built-in spam filtering, customizable thank-you and error pages, and support for bot protection tools like reCAPTCHA, hCaptcha, and Turnstile. Users can invite unlimited team members to collaborate on forms and workspaces. The product is deployed as a plug and play solution that handles the backend infrastructure for any custom HTML form.

Whether you want to cut software costs or escape vendor lock-in, these open source alternatives to Formspark give you an option you fully own. You can self-host them, so your data stays on infrastructure you control. This page lists 1 open source alternative to Formspark. The most popular is Router.so. It uses the AGPL-3.0 license and ships an official Docker image.