I use Time Keeping Sucks (TKS), because it's a great little command line tool[0], Vim format, web UI[1] and more written by some very talented colleagues and lots of people (myself included) use it daily at work. It's built to interface with the time tracking system at work, but could probably easily be generalized to work with any similar API.

(You might find my Python stub[2] if you search for the name. It's really just a development setup based on other work, to maybe use the ideas from the original Perl implementation and hopefully involve a wider community.)

[0] https://debian.catalyst.net.nz/catalyst/dists/stable/catalys...

[1] https://github.com/grantm/tksweb

[2] https://gitlab.com/victor-engmark/tks/

I am a fan of rescuetime.com

I set up separate accounts on my machine for personal, work, sideprojects and log in to those accounts when I am working or when I want to veg out and play minecraft. Couple this with an invasive tracker like rescuetime and I can have HN and reddit blocked on my work-related user accounts.

Followup question: Can anyone comment on using the org-mode clock feature for something like this? I keep running into mentions of the feature in the manual, but I've never seen anyone actually using it in the wild.

Activitywatch is nice

I'm using a toy command line python app that I wrote when I was learning how to do PEG grammars.

But I've used Harvest [0] in the past when I was a contractor and I was happy with that for time tracking and invoicing.

[0] https://www.getharvest.com