head to head · open source
SolidTime vs Wakapi
SolidTime has 9,102 GitHub stars, 532 forks, 32 open issues and last shipped yesterday. Wakapi has 4,471 stars, 310 forks, 39 open issues and last shipped 10 days ago. SolidTime leads on adoption by 104% (9,102 vs 4,471 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 | ★ 9.1K | ★ 4.5K |
| License | AGPL-3.0 | MIT |
| Written in | PHP | Go |
| Last push | 2026-11-02 | 2026-10-24 |
| Forks | ⑂ 532 | ⑂ 310 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick SolidTime if
- You weight community size — 9.1K 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 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 The modern Open Source TimeTracker solidtime is a modern open source time tracking application for Freelancers and Agencies. Features Time tracking: Track your time with a modern and easy to use interface Projects: Create and manage projects and assign project members Tasks: Create and manage tasks and assign tasks to projects Clients: Create and manage clients and assign clients to projects Billable rates: Set billable rates for projects, project members, organization members and organizations Multiple organizations: Create and manage multiple organizations with one account Roles and permissions…
read the full SolidTime overview →
About Wakapi
A minimalist, self hosted WakaTime compatible backend for coding statistics. Website Features How to use Issues Contact [!IMPORTANT] Due to limited time available on the maintainers' part, we temporarily do not accept pull requests. Please refrain from submitting contributions for the time being. 🚀 Features ✅ Free and open source ✅ Built by developers for developers ✅ Statistics for projects, languages, editors, hosts and operating systems ✅ Badges ✅ Weekly E Mail reports ✅ REST API ✅ Partially compatible with WakaTime ✅ WakaTime integration ✅ Support for Prometheus exports ✅ Lightning fast ✅ Self hosted ⌨️ How…
read the full Wakapi overview →
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Frequently asked questions
Is SolidTime or Wakapi more popular?
SolidTime has 9,102 GitHub stars and Wakapi has 4,471. 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 (9,102 stars) or its AGPL-3.0 licence terms. Choose Wakapi if its feature set, stack or MIT licence fits better. Both are self-hostable.