arbtt vs Kimai

A side-by-side comparison of two self-hosted time tracking options — licensing, setup difficulty, resource needs, and what each one replaces.

Not the right match-up?
FeaturearbttKimai
CategoryTime TrackingTime Tracking
LicenseGPL-2.0AGPL-3.0
LanguageHaskellPHP
Setup difficultyMediumMedium
Min. RAM128 MB512 MB
Deploymentbinary, sourcedocker, bare-metal, source
GitHub stars★ 354★ 4,871
First released20092006
ReplacesRescueTime, ManicTimeToggl, Harvest, Clockify

Why pick each one

Choose arbtt if…

  • Released under the GPL-2.0 license
  • Written in Haskell
  • Tiny footprint — runs in 128 MB RAM
arbtt details

Choose Kimai if…

  • Mature and actively maintained
  • Strong invoicing features
Kimai details

Frequently asked questions

Is arbtt or Kimai better?

Neither is universally better. Kimai has the larger community; both share a medium setup difficulty, so the decision comes down to features and licensing.

Are arbtt and Kimai free and open-source?

Yes. arbtt is licensed under GPL-2.0 and Kimai under AGPL-3.0. Both can be self-hosted at no software cost.

Can I run arbtt and Kimai with Docker?

arbtt: check the project docs for container support. Kimai: yes.

Related comparisons