TimeTagger

Open‑source time tracker with interactive timeline and powerful reporting

TimeTagger is an open‑source time‑tracking app designed for individuals and freelancers. It uses a visual, interactive timeline where you tag activities, set targets, and employ a Pomodoro timer to stay focused. Export detailed CSV or PDF reports for client billing, sync data across devices, work offline, and integrate via its web API or CLI. Offers a free self‑hosted version and affordable SaaS plans.