head to head · open source
Avalonia vs mocha
Avalonia has 31,747 GitHub stars, 2,877 forks, 1,875 open issues and last shipped yesterday. mocha has 22,912 stars, 3,144 forks, 222 open issues and last shipped yesterday. Avalonia leads on adoption by 39% (31,747 vs 22,912 stars). Avalonia is written in C# under MIT; mocha is written in JavaScript under MIT. Avalonia has attracted 9% as many forks as stars, mocha 14%. mocha was the more recently maintained of the two, and both are self-hostable with no licence fee. The two share 1 topic tag (browser), 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
| Avalonia | mocha | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 23K |
| License | MIT | MIT |
| Written in | C# | JavaScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.9K | ⑂ 3.1K |
| Self-hosting | Yes | Yes |
| Data ownership | Your server | Your server |
pick Avalonia if
- You weight community size — 32K stars and counting
- You want the MIT license terms
- Your stack matches C#
- You value the larger contributor base for long-term maintenance
pick mocha if
- You want the mocha feature set and don't need the biggest community
- You prefer the MIT license terms
- Your stack matches JavaScript
- You evaluated both and mocha fits your workflow better
About Avalonia
📖 About Avalonia is a cross platform UI framework for dotnet, providing a flexible styling system and supporting a wide range of platforms such as Windows, macOS, Linux, iOS, Android and WebAssembly. Avalonia is mature and production ready and is used by companies, including Schneider Electric, Unity, JetBrains and GitHub. Considered by many to be the spiritual successor to WPF, Avalonia UI provides a familiar, modern development experience for XAML developers creating cross platform applications. While Avalonia UI is similar to WPF, it isn't a 1:1 copy, and you'll find plenty of improvements. For those seeking…
read the full Avalonia overview →
About mocha
☕️ Classic, reliable, trusted test framework for Node.js and the browser ☕️ Links Documentation Release Notes / History / Changes Code of Conduct Contributing Development Discord (ask questions here!) Issue Tracker Backers Become a backer and show your support to our open source project on our site. Sponsors Does your company use Mocha? Ask your manager or marketing team if your company would be interested in supporting our project. Support will allow the maintainers to dedicate more time for maintenance and new features for everyone. Also, your company's logo will show on GitHub and on our site who doesn't want…
read the full mocha overview →
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Frequently asked questions
Is Avalonia or mocha more popular?
Avalonia has 31,747 GitHub stars and mocha has 22,912. Avalonia has the larger community by that measure.
Are Avalonia and mocha free?
Both are open source. Avalonia is licensed under MIT and mocha under MIT. Neither carries a licence fee.
What is the difference between Avalonia and mocha?
Avalonia is written in C# and mocha in JavaScript. The practical differences are community size, licence terms, language stack and release cadence — all compared in the table above.
Which should I choose, Avalonia or mocha?
Choose Avalonia if you want the larger community (31,747 stars) or its MIT licence terms. Choose mocha if its feature set, stack or MIT licence fits better. Both are self-hostable.