head to head · open source
Avalonia vs SingleFile
Avalonia has 31,747 GitHub stars, 2,877 forks, 1,875 open issues and last shipped yesterday. SingleFile has 22,811 stars, 1,432 forks, 101 open issues and last shipped yesterday. Avalonia leads on adoption by 39% (31,747 vs 22,811 stars). Avalonia is written in C# under MIT; SingleFile is written in JavaScript under AGPL-3.0. Avalonia has attracted 9% as many forks as stars, SingleFile 6%. SingleFile 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 | SingleFile | |
|---|---|---|
| GitHub stars | ★ 32K | ★ 23K |
| License | MIT | AGPL-3.0 |
| Written in | C# | JavaScript |
| Last push | 2026-11-02 | 2026-11-02 |
| Forks | ⑂ 2.9K | ⑂ 1.4K |
| 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 SingleFile if
- You want the SingleFile feature set and don't need the biggest community
- You prefer the AGPL-3.0 license terms
- Your stack matches JavaScript
- You evaluated both and SingleFile 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 SingleFile
SingleFile SingleFile helps you to save a complete web page into a single HTML file. SingleFile is a Web Extension (and a CLI tool) compatible with Chrome, Firefox (Desktop and Mobile), Microsoft Edge, Safari, Vivaldi, Brave, Waterfox, Yandex browser, and Opera. Table of Contents SingleFile Table of Contents Demo Install Getting started Additional notes FAQ Release notes Known Issues and Troubleshooting Command Line Interface (SingleFile CLI) Integration with user scripts File format comparison Projects using/compatible with SingleFile Privacy Policy Contributors Code derived from third party projects Icons…
read the full SingleFile overview →
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Frequently asked questions
Is Avalonia or SingleFile more popular?
Avalonia has 31,747 GitHub stars and SingleFile has 22,811. Avalonia has the larger community by that measure.
Are Avalonia and SingleFile free?
Both are open source. Avalonia is licensed under MIT and SingleFile under AGPL-3.0. Neither carries a licence fee.
What is the difference between Avalonia and SingleFile?
Avalonia is written in C# and SingleFile 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 SingleFile?
Choose Avalonia if you want the larger community (31,747 stars) or its MIT licence terms. Choose SingleFile if its feature set, stack or AGPL-3.0 licence fits better. Both are self-hostable.