Introduction
OpenComputer is the open source, self hostable alternative to Devin. Mention @Computer in a Slack thread with a task, it works on its own computer, you & your team can watch and steer it as it goes, and the result lands as a pull request.
It is open source from the compute layer up, so you can run all of it in your own cloud account, or start on OpenComputer Cloud in two minutes.
We built it to feel as fast as Claude Code on your laptop: in our benchmark it opens PRs 3.3x faster than Devin.
See it work
As fast as local
How it works
OpenComputer is built to be simple to self-host without giving up scale or security. The whole stack runs on a single VM, which we recommend locking down to outbound-only network access.
The VM runs the gateway, Calvin: a thin bridge that listens for Slack events and starts a session with Claude Code, Codex or OpenCode, depending on your configuration. Each session is isolated with rootless Podman. Its state is written first to the VM's local disk, then persisted to a git-backed store.
The rest of the stack runs on Cloudflare Workers and Durable Objects. Support for Fly and other platforms is coming soon.
Try it in Cloud
The fastest way to experience @Computer is to install the Slack app from the cloud: sign up here, connect your repos, and install the Slack app to get started.
- 3.3x faster than Devin: all 4 PRs open with CI green in 56s vs 185s (benchmark)
- 2.6x faster than the average of the 4 most popular cloud agents: first push in 24s vs a 62s average (benchmark)
- 3-day free trial with 600 work minutes
- Bring your own ChatGPT / Codex subscription
License
Apache 2.0. See LICENSE.
