head to head · open source
Invoice Ninja vs UniBee
Invoice Ninja has 10,464 GitHub stars, 2,793 forks, 945 open issues and last shipped yesterday. UniBee has 234 stars, 40 forks, 2 open issues and last shipped 8 months ago. Invoice Ninja leads on adoption by 4,372% (10,464 vs 234 stars). Invoice Ninja is written in PHP under a custom or non-standard licence; UniBee is written in various languages under AGPL-3.0. Invoice Ninja has attracted 27% as many forks as stars, UniBee 17%. Invoice Ninja 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
| Invoice Ninja | UniBee | |
|---|---|---|
| GitHub stars | ★ 10K | ★ 234 |
| License | Custom / other | AGPL-3.0 |
| Written in | PHP | — |
| Last push | 2026-11-02 | 2026-02-23 |
| Forks | ⑂ 2.8K | ⑂ 40 |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Invoice Ninja if
- You weight community size — 10K stars and counting
- You want the Custom / other license terms
- Your stack matches PHP
- You value the larger contributor base for long-term maintenance
pick UniBee if
- You want the UniBee feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- You evaluated both and UniBee fits your workflow better
About Invoice Ninja
Invoice Ninja 5 Invoice Ninja Version 5 is here! We've taken the best parts of version 4 and added the most requested features to create an invoicing application like no other. Check the Invoice Ninja YouTube Channel to get up to speed, or try the Demo now. Choose your setup Hosted: Our hosted version is a Software as a Service (SaaS) solution. You're up and running in under 5 minutes, with no need to worry about hosting or server infrastructure. Self Hosted: For those who prefer to manage their own hosting and server infrastructure. This version gives you full control and flexibility. All Pro and Enterprise…
read the full Invoice Ninja overview →
About UniBee
UniBee An open source universal billing software for SaaS businesses 👋 Introduction Welcome to UniBee! UniBee is your go to solution for a seamless, affordable, and intuitive billing experience. Unlike other closed source and costly platforms, UniBee is open source and have community version and enterprise version. UniBee is designed specifically for SaaS businesses, with UniBee you can manage your subscriptions, invoices, and transactions with ease. UniBee offers a user friendly and cost effective alternative to closed source, expensive, and complex solutions like Recurly, Chargebee, and Paddle. ✨ Features…
read the full UniBee overview →
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Frequently asked questions
Is Invoice Ninja or UniBee more popular?
Invoice Ninja has 10,464 GitHub stars and UniBee has 234. Invoice Ninja has the larger community by that measure.
Are Invoice Ninja and UniBee free?
Both are open source. Invoice Ninja has no licence declared in this registry, and UniBee is licensed under AGPL-3.0. Both are free to self-host.
What is the difference between Invoice Ninja and UniBee?
Invoice Ninja is written in PHP and UniBee in various languages. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Invoice Ninja or UniBee?
Choose Invoice Ninja if you want the larger community (10,464 stars) or its Custom / other licence terms. Choose UniBee if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.