UNF

UNF* is a local-first, continuous file versioning tool that records every save to your workspace in real time, giving you a complete point-in-time history without requiring any Git commits. It is designed specifically for the AI-agent era, where autonomous tools can mass-overwrite, delete, or corrupt files before you have a chance to react. UNF* runs silently in the background at under 1% CPU and under 100MB RAM, storing all snapshots locally with no cloud, no accounts, and no telemetry. It is completely free with no subscription or usage limits.

• Continuous recording — uses FSEvents on macOS and inotify on Linux to capture every file save with a 3-second smart debounce, respecting .gitignore and skipping binaries.
• Content-addressed storage — uses BLAKE3 hashing and SQLite with ACID guarantees; identical file contents are stored only once, keeping storage lean.
• Point-in-time restore — run unf restore --at <TIME> to rewind any file or entire workspace to any second in history using relative (e.g., 5m, 1h) or absolute ISO 8601 timestamps.
• AI burst detection — automatically identifies mass-change events from AI agents and creates safety checkpoints around them for easy rollback.
• Automatic retention decay — keeps full history for 24 hours, hourly snapshots for 7 days, and daily snapshots for 30 days, then prunes automatically.
• Session recap — unf recap summarizes session activity, files touched, and AI bursts detected, with --json output for machine-readable pipelines.
• Desktop App & CLI — install the Desktop App via Homebrew Cask (includes the CLI) or install the CLI alone with brew install cyrusradfar/unf/unf, then run unf watch to start.
• Local-first & private — all data lives in ~/.unfudged/; nothing leaves your machine, no network calls, no telemetry.
• Rich diff & log commands — unf log, unf diff, and unf cat let you inspect exactly what changed, when, and by how much before committing to a restore.