East River Source Control has operated in stealth for over a year, rethinking version control for the modern era. Building software remains a fundamentally collaborative task, evolving from humble beginnings into complex, multi-billion line systems. While legacy tools like Git, Perforce, and Clear Case dominated the open source space, the rise of agentic development has placed new strain on version control.

Teams now produce code faster than ever, ballooning repository sizes and increasing branch contention. Agents favor monorepos for context access, and cloud-based isolated environments demand faster clone times. East River believes organizations scaling their ambitions need a next-generation VCS tool, but adoption carries risk since source code is a precious commodity.

The company is building a bridge from present workflows to the future. Their architecture retains the familiar Git protocol and client interface but replaces the backend storage with a custom, non-Git engine. This approach preserves developer workflows while addressing Git's limitations regarding scalability and agent integration.

By decoupling the protocol from the storage layer, East River aims to offer the speed and safety organizations need without forcing a disruptive toolchain change.