head to head · open source
Kimai vs Sol
Kimai has 5,129 GitHub stars, 878 forks, 350 open issues and last shipped yesterday. Sol has 3,194 stars, 193 forks, 16 open issues and last shipped 2 days ago. Kimai leads on adoption by 61% (5,129 vs 3,194 stars). Kimai is written in PHP under AGPL-3.0; Sol is written in TypeScript under MIT. Kimai has attracted 17% as many forks as stars, Sol 6%. Kimai was the more recently maintained of the two, and both are self-hostable with no licence fee.
Two open source projects, one decision. Both are free and self-hostable — the differences are community size, license terms, language stack and release pace.
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Side by side
| Kimai | Sol | |
|---|---|---|
| GitHub stars | ★ 5.1K | ★ 3.2K |
| License | AGPL-3.0 | MIT |
| Written in | PHP | TypeScript |
| Last push | 2026-11-02 | 2026-11-01 |
| Forks | ⑂ 878 | ⑂ 193 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Kimai if
- You weight community size — 5.1K stars and counting
- You want the AGPL-3.0 license terms
- Your stack matches PHP
- You value the larger contributor base for long-term maintenance
pick Sol if
- You want the Sol feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches TypeScript
- You evaluated both and Sol fits your workflow better
About Kimai
Kimai 1 Open Source Time Tracker Kimai is a professional grade time tracking application, free and open source. It handles use cases of freelancers as well as companies with dozens or hundreds of users. Kimai was build to track your project times and ships with many advanced features, including but not limited to: JSON API, invoicing, data exports, multi timer and punch in punch out mode, tagging, multi user multi timezones multi language (over 30 translations existing!), authentication via SAML/LDAP/Database, two factor authentication (2FA) with TOTP, customizable role and team permissions, responsive design…
read the full Kimai overview →
About Sol
Sol Sol is an open source app launcher, focused on ease of use and speed. It has minimal configuration and runs natively. Visit official site Download Install via brew Or manually download the latest release. Discord Join the Discord Features App search Custom shortcuts Google translate Calendar Show upcoming appointement in Menu Bar Custom AppleScript commands Custom links Imports browser bookmarks Window Manager Emoji picker Clipboard manager Notes Scratchpad Retrieve Wi Fi password Show IP address Start a google meet Switch OS theme Process killer Generate NanoID Generate UUID Generate lorem ipsum Format and…
More in Productivity & Utilities
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Frequently asked questions
Is Kimai or Sol more popular?
Kimai has 5,129 GitHub stars and Sol has 3,194. Kimai has the larger community by that measure.
Are Kimai and Sol free?
Both are open source. Kimai is licensed under AGPL-3.0 and Sol under MIT. Neither carries a licence fee.
What is the difference between Kimai and Sol?
Kimai is written in PHP and Sol in TypeScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Kimai or Sol?
Choose Kimai if you want the larger community (5,129 stars) or its AGPL-3.0 licence terms. Choose Sol if its feature set, stack or MIT licence fits better. Both are self-hostable.