Invoice Ninja vs 
Kimai
Compared on data, not vibes. Metrics refresh nightly; verdict links carry the math.
| Invoice Ninja | Kimai | |
|---|---|---|
| GitHub stars | 9,985 | 4,875 |
| Last commit | 0d ago | 0d ago |
| Latest release | v5.13.30 | 2.64.0 |
| Docker pulls | — | — |
| License | Elastic-2.0 | AGPL-3.0 |
| Min RAM | 3,072 MB | 2,048 MB |
| Containers | 4 | 2 |
| ARM (Pi-friendly) | yes | yes |
Invoice Ninja
Invoices, quotes, expenses and a client portal on your own domain, with no cap on how many clients you bill.
Backs these verdicts
Kimai
Timesheets with customers, projects, hourly rates and invoices, on a server that never asks how many seats you have.
Backs these verdicts
Neither page tells you which is "better" — they solve the same jobs differently. Pick by the constraint that binds you: RAM, ARM, license, or how alive the project looks.