I think this belongs here, I’ve been building a Time Tracker for GitLab for about a year because the built-in time tracking support is pretty lackluster. It’s built in Kotlin with TornadoFX. You can read more about it on my Reddit post: https://www.reddit.com/r/Kotlin/comments/mil7ub/check_out_the_time_tracker_i_built_for_gitlab/
I hope other people find it as useful as I do!