OpenBitFun is an open-source agent workspace that combines a high-performance agent runtime written in Rust with a polished desktop application, published on GitHub where it has gathered about 2,900 stars. It pairs the depth of a code agent with open, general-purpose capabilities for work well beyond software development.
OpenBitFun is built around four Agent Harness modes for different kinds of work, cross-device remote control spanning desktop, mobile and browser, and customization that ranges from installable Mini Apps to full source-level changes. The 1.0 release brought a redesigned interface and major upgrades to cross-device collaboration, so tasks can move smoothly between machines while you steer them remotely. The core code is MIT licensed, the project ships builds for Windows, macOS and Linux, and it remains under very active development in 2026. A public roadmap, download builds and a Mini App marketplace are linked from the repository, and contributions are welcomed through its open issue tracker.
OpenBitFun is free and open source under the MIT license. You download the desktop application or build from source and run everything on your own hardware, with no paid tiers or usage limits.
OpenBitFun is for developers and power users who want a customizable, self-hosted agent workspace that handles coding and general knowledge work in one place.