edge-runtime

Supabase Edge Runtime is the engine that powers Supabase Edge Functions. It lets you run TypeScript/JavaScript functions at the edge using Deno. If you're building on Supabase and need serverless functions that respond fast from locations close to your users, this is what runs them under the hood. Free and open source under MIT. You can self-host it to run Deno-based edge functions on your own infrastructure. It handles request routing, worker isolation, and memory management for function execution.

As part of the Supabase platform, you get 500K function invocations/month free on their hosted service. Beyond that, it's $2 per million invocations on the Pro plan ($25/mo base). Supabase users: use Edge Functions through the platform, the free tier is generous. Non-Supabase users: look at Deno Deploy or Cloudflare Workers instead.

The catch: this is a specialized runtime, not a general-purpose serverless platform. It's tightly coupled to the Supabase ecosystem. If you're not using Supabase, you'd be better off with Deno Deploy directly, Cloudflare Workers, or Vercel Edge Functions. Self-hosting it standalone is possible but there's limited documentation for that use case.