Overview:
Router.so is an open-source form backend that functions as a routing layer for form submissions. It addresses the need to forward form data from a frontend to designated endpoints without building a dedicated server. The project is primarily aimed at developers embedding forms into static sites or JAMstack applications who want a lightweight, self-hostable alternative to commercial form handling services.
Core Features:
Form data routing: Receives data submitted from a frontend form and forwards POST requests to a configurable endpoint destination.
Self-hosting support: Can be run locally using Docker or without Docker, with environment variable configuration for keys.
Database migration system: Generates and runs database migrations as part of the setup process, indicating it stores submission or routing state.
Use Cases:
Developers building contact or lead capture forms on static sites: Route submissions to an email service or CRM webhook without a custom backend.
JAMstack projects needing a serverless form handler: Deploy the router on Vercel and use environment variables to manage endpoint targets.
Self-hosters who want to keep form data routing under their own infrastructure: Run the application via Docker or locally to avoid third-party form processing services.
Why It Matters:
As an open-source form backend, Router.so offers developers a self-hosted option for form routing that can be deployed on Vercel or locally via Docker. Its lightweight design—focused purely on receiving form data and forwarding it—provides transparency and control over form handling logic compared to proprietary form-backend SaaS. The project includes a database and migration system, suggesting support for persistent state or logging beyond simple forwarding.