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OpenWorkers is an open-source runtime that enables self-hosted execution of untrusted JavaScript in V8 isolates, providing a Cloudflare Workers-compatible alternative. Built in Rust, it supports KV storage, PostgreSQL, S3/R2 storage, service bindings, and standard Web APIs. The architecture includes secure sandboxing with CPU and memory limits, cron scheduling, and can be deployed with a single PostgreSQL database and Docker Compose file. The project evolved over 7 years from vm2 to deno-core and now runs on rusty_v8, aiming to deliver edge computing capabilities without vendor lock-in.

Introducing OpenWorkers – Self-hosted Cloudflare Workers in Rust

Host serverless applications on your server!
Seriously, this is cool. Could be a mice alternative to running docker compose or other container orchestration platforms if it is simpler to host and run.
That being said, it is somewhat sparse in terms of documentation. I am assuming it is relying on the Cloudflare documentation for writing workers? But still missing documentation on how to maybe automate the deployment process, any platform APIs, etc.

People might have a knee jerk reaction and think self-hosted serverless makes no sense. But it actually does. There’s a lot of benefits even if we just look at the isolation aspects of it. Such as running untrusted code.
Very cool 🙌🏼