Tockler

Category: Time Tracking.

GPL-2.0☁️ Hosted only

WakaTime

Category: Time Tracking.

BSD-3-Clause☁️ Hosted only

Wakapi

Category: Time Tracking.

MIT🖥️ Self-hostable

ActivityWatch

Category: Time Tracking.

MPL-2.0☁️ Hosted only

Kimai

Category: Time Tracking.

AGPL-3.0-or-later🖥️ Self-hostable