head to head · open source
Avalonia vs nanobrowser
Avalonia has 31,530 GitHub stars, 2,825 forks, 1,875 open issues and last shipped 2 days ago. nanobrowser has 13,810 stars, 1,459 forks, 81 open issues and last shipped 1 months ago. Avalonia leads on adoption by 128% (31,530 vs 13,810 stars). Avalonia is written in C# under MIT; nanobrowser is written in TypeScript under Apache-2.0. Avalonia has attracted 9% as many forks as stars, nanobrowser 11%. Avalonia 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 | nanobrowser | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 14K |
| License | MIT | Apache-2.0 |
| Written in | C# | TypeScript |
| Last push | 2026-09-18 | 2026-08-18 |
| Forks | ⑂ 2.8K | ⑂ 1.5K |
| 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 nanobrowser if
- You want the nanobrowser feature set and don't need the biggest community
- You prefer the Apache-2.0 license terms
- Your stack matches TypeScript
- You evaluated both and nanobrowser fits your workflow better
About Avalonia
Avalonia is a cross platform UI framework for .NET, written in C and driven by XAML. It provides a flexible styling system and targets a wide range of platforms, including Windows, macOS, Linux, iOS, Android and WebAssembly. The project is mature and production ready, and it is used by companies such as Schneider Electric, Unity, JetBrains and GitHub. It lives in the .NET ecosystem and is distributed through the NuGet package manager.
read the full Avalonia overview →
About nanobrowser
Nanobrowser is an open source Chrome extension for AI powered web automation that runs multi agent workflows inside your own browser using your own LLM API key, built for people who want Operator style browser agents without a subscription.
read the full nanobrowser overview →
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Frequently asked questions
Is Avalonia or nanobrowser more popular?
Avalonia has 31,530 GitHub stars and nanobrowser has 13,810. Avalonia has the larger community by that measure.
Are Avalonia and nanobrowser free?
Both are open source. Avalonia is licensed under MIT and nanobrowser under Apache-2.0. Neither carries a licence fee.
What is the difference between Avalonia and nanobrowser?
Avalonia is written in C# and nanobrowser in TypeScript. 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 nanobrowser?
Choose Avalonia if you want the larger community (31,530 stars) or its MIT licence terms. Choose nanobrowser if its feature set, stack or Apache-2.0 licence fits better. Both are self-hostable.