Kimai is an open-source, web-based time tracking app for teams and freelancers, with project/customer management, reporting, exports, and invoicing.

5k stars838 forksAGPL-3.0last commit Actively maintained
ZEI° by Timeular is a cloud time-tracking application that records and categorizes work activities, provides tagging, reports and analytics, and syncs across devices and integrations to analyze and optimize time usage.
Kimai is an open-source, web-based time tracking app for teams and freelancers, with project/customer management, reporting, exports, and invoicing.

5k stars838 forksAGPL-3.0last commit Actively maintained
Open source web-based time tracker with an interactive timeline, tag-based workflow, targets, and CSV/PDF reporting for individuals and freelancers.

1.8k stars167 forksGPL-3.0last commit Actively maintained
Open-source, tag-based time tracker that records time spans with tags and provides customizable dashboards, calendar/list views, themes, and Docker deployment.

1.6k stars94 forksGPL-3.0last commit Actively maintained
Every option on this page is open source and free to run on your own hardware, so you own the data and there is no subscription to cancel. 3 of 3 shipped a commit in the last six months. Licences in this list: AGPL-3.0, GPL-3.0. In exchange you take on hosting, backups and updates yourself.
Browse everything in Tasks, Habits & Time Tracking.