Command-line time tracking and interval reporting with tags and flexible summaries.
Free and open source (MIT).

Notes, tasks & docs
Automated, privacy-first time and application tracking with local data storage and web dashboard.
Automated, privacy-first time and application tracking with local data storage and web dashboard.
Automated local application and window time tracking with personal dashboard without RescueTime, Toggl Track, or Timely cloud subscriptions. All data remains stored locally.
Needs a real desktop session and background permissions. The synthetic X11 test captured one active window; window switching and AFK events were not verified. No cloud team dashboard or invoicing.
Each comparison covers the workflow described above, rather than every paid feature.