Avalonia UI vs OpenJFX
No leader: the top candidate OpenJFX has only 0.25 confidence (low), below the 0.35 needed to declare a winner. The attribute-by-attribute breakdown below, with a source and date on every value, is the honest way to compare them.
Capabilities
Feature-by-feature on the axes that matter for desktop app frameworks. “-” means undocumented, not absent.
What each one is
The product in its own terms, so the numbers below have context.
Avalonia UI
An open-source, MIT-licensed framework that allows developers to build applications for Windows, macOS, Linux, iOS, Android, and WebAssembly using shared C# and XAML code. It renders custom user interfaces consistently across all target platforms by implementing its own UI drawing rather than relying on platform-native controls.
OpenJFX
An open-source platform that provides a toolkit for developing client applications in Java, with libraries and resources supporting the complete application lifecycle from development through deployment.
Pricing
List pricing as published by each vendor, with the date we read it. Always verify at the source before you buy.
Avalonia UI
Free open-source tier; Plus from €299/seat/year; Pro €899/seat/year; Enterprise €6,999/seat/year
- FreeFree
- MIT licensed framework
- Cross-platform support
- 70+ built-in controls
- Community support via GitHub
- Plus€299/seat/year
- Everything in Free
- Avalonia for Visual Studio extension
- Avalonia for Code (VS Code) extension
- DevTools
- Build MCP
- +2 more
- Pro€899/seat/year
- Everything in Plus
- 6 premium UI controls
- 70+ charts and data visualizations
- Priority GitHub responses
- EnterpriseContact sales
- Everything in Pro
- Commercial component source code access
- SLA and dedicated engineering support
- Quarterly technical check-ins
- Long-Term Support releases
- +1 more
Platform & deployment
Where each product runs and how it can be hosted. A dash means undocumented, not unsupported.
Avalonia UI or OpenJFX: which one depends on you
A composite score cannot know your constraints. Describe them and both get re-weighted against what you actually need, with the evidence behind every position.
Free to run, no account needed to start. How the evaluation works
Comparison generated from independently-sourced facts. Every value links to its source and retrieval date. See the method.