head to head · open source
SolidTime vs Wakapi
SolidTime has 8,923 GitHub stars, 507 forks, 32 open issues and last shipped yesterday. Wakapi has 4,433 stars, 300 forks, 39 open issues and last shipped 4 days ago. SolidTime leads on adoption by 101% (8,923 vs 4,433 stars). SolidTime is written in PHP under AGPL-3.0; Wakapi is written in Go under MIT. SolidTime has attracted 6% as many forks as stars, Wakapi 7%. SolidTime was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 2 topic tags (self-hosted, time-tracker), so they are genuine substitutes rather than adjacent tools.
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
| SolidTime | Wakapi | |
|---|---|---|
| GitHub stars | ★ 8.9K | ★ 4.4K |
| License | AGPL-3.0 | MIT |
| Written in | PHP | Go |
| Last push | 2026-09-17 | 2026-09-14 |
| Forks | ⑂ 507 | ⑂ 300 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick SolidTime if
- You weight community size — 8.9K 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 Wakapi if
- You want the Wakapi feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches Go
- You evaluated both and Wakapi fits your workflow better
About SolidTime
SolidTime is a modern open source time tracking application built for freelancers and agencies. It is written in PHP on the Laravel framework, with a Vue front end, and it lives in the Laravel and Vue ecosystems that its topic list names. The project is licensed under the GNU Affero General Public License v3.0 and is developed in the solidtime io/solidtime repository. It ships with 8,923 stars, 508 forks, and 32 open issues at the time of writing, and it presents itself as a self hosted alternative with an optional hosted service.
read the full SolidTime overview →
About Wakapi
Wakapi is a minimalist, self hosted backend for coding statistics that speaks the WakaTime API. It is written in Go and released under the MIT license, and it lives in the developer tools and productivity ecosystem alongside the WakaTime client tooling it is designed to work with. The project presents itself as a free and open source alternative built by developers for developers, and it ships as a single service that collects, stores and visualizes time tracking data sent from editors and IDEs.
read the full Wakapi overview →
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Frequently asked questions
Is SolidTime or Wakapi more popular?
SolidTime has 8,923 GitHub stars and Wakapi has 4,433. SolidTime has the larger community by that measure.
Are SolidTime and Wakapi free?
Both are open source. SolidTime is licensed under AGPL-3.0 and Wakapi under MIT. Neither carries a licence fee.
What is the difference between SolidTime and Wakapi?
SolidTime is written in PHP and Wakapi in Go. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, SolidTime or Wakapi?
Choose SolidTime if you want the larger community (8,923 stars) or its AGPL-3.0 licence terms. Choose Wakapi if its feature set, stack or MIT licence fits better. Both are self-hostable.