concurrent.cd
Tool / Copy-on-write, content-addressed workspaces: every step is a checkpoint, agents fork recursively from any commit, and a commit to a file that already changed is refused as a conflict. A `.lww` file names paths where the newest edit wins, and dependencies come with each mount so nothing is reinstalled.

LayerFS

Open-source filesystem where each agent mounts a full writable workspace over one shared, checkpointed history.

The summary describes what the project says it does; inclusion is not an endorsement.

AI-drafted