LunarFS

What it does

Running multiple AI agents on the same repo means cloning it per agent, waiting 30-140s for pnpm install on Mac, and hoping they don't stomp each other. Git's branch-lock means two agents can't share a branch at all. LunarFS fixes this at the filesystem level. Fork a new agent workspace in under 5ms. Files stream in on demand — touch 200 of 50,000, pay for 200. Each agent writes to its own private overlay. Agents push normal Git commits when done. Open-source. Works on Linux, Mac, and Windows.

Content-addressed lazy filesystem for developer repos. Store every blob once, address it by hash, and share repo snapshots without duplicating bytes.

Fork a workspace in milliseconds, mount it instantly, hydrate files lazily, and throw it away when the agent is done. Forking the Linux kernel: git worktree 7.4s vs lunar 13ms (548x) A BLAKE3 content-addressed store deduplicates every blob across all workspaces so a fork copies zero bytes upfront. Data exists once; every workspace references, never copies. Forks share underlying blobs. Diverged pages materialize only when written, so a fork is ~13ms regardless of repo size. Storage grows only with your actual changes. Workspaces mount via FUSE and bytes are fetched from the CAS only on first read, so mount is instant regardless of repo size. Agents see a full directory tree immediately.…from lunarfs.com

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