# Avalonia UI vs OpenJFX

| Attribute | Avalonia UI | OpenJFX |
|---|---|---|
| **vioscaleAI score** | 48.8 (31% (low)) | 51.6 (25% (low)) |
| activity.commits_last_30d | - | 28 |
| adoption.dependent_repos | - | 17,108 |
| adoption.github_stars | - | 3,286 |
| content.faq | `[{"answer":"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. It is indexed under Desktop App Frameworks.","source":"https://avaloniaui.net/pricing","question":"What is Avalonia UI?","confidence":0.6},{"answer":"Avalonia UI offers a free tier, so you can start without paying. Paid plans start at €299 per user per year. Prices are published openly on the vendor's own pricing page. Pricing changes often, so verify at source before relying on it.","source":"https://avaloniaui.net/pricing","question":"Is Avalonia UI free?","confidence":0.6},{"answer":"Avalonia UI supports the web, Windows, macOS, Linux, iOS and Android. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://avaloniaui.net/pricing","question":"What platforms does Avalonia UI support?","confidence":0.6},{"answer":"Yes. Avalonia UI can be deployed on-premise and air-gapped, so it does not have to run on the vendor's infrastructure.","source":"https://avaloniaui.net/pricing","question":"Can Avalonia UI be self-hosted?","confidence":0.6},{"answer":"We have independently confirmed GDPR for Avalonia UI. Certifications we do not list are ones we have not been able to verify from public sources, which is not the same as Avalonia UI not holding them. Always confirm compliance directly before you rely on it.","source":"https://avaloniaui.net/legal/privacy-policy","question":"What security certifications does Avalonia UI have?","confidence":0.7},{"answer":"Avalonia UI is available worldwide. Its primary markets are the United States, the EU and the United Kingdom. The vendor is headquartered in Estonia.","source":"https://avaloniaui.net/pricing","question":"Where is Avalonia UI available?","confidence":0.75}]` | `[{"answer":"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. It is indexed under Desktop App Frameworks.","source":"https://openjfx.io/","question":"What is OpenJFX?","confidence":0.6},{"answer":"OpenJFX is open source, so it can be self-hosted and used at no licence cost. It is released under the GPL-2.0 licence. Pricing changes often, so verify at source before relying on it.","source":"https://openjfx.io/","question":"Is OpenJFX free to use?","confidence":0.6},{"answer":"OpenJFX supports a command-line interface. Platforms we have not confirmed are simply not listed here rather than ruled out.","source":"https://openjfx.io/","question":"What platforms does OpenJFX support?","confidence":0.6},{"answer":"Yes. OpenJFX can be deployed self-hosted, so it does not have to run on the vendor's infrastructure.","source":"https://openjfx.io/","question":"Can OpenJFX be self-hosted?","confidence":0.6},{"answer":"Yes. OpenJFX is published under the GPL-2.0 licence, a copyleft licence, so check its terms before embedding it in a closed-source product. Licence terms can change between releases, so verify against the repository for the version you intend to use.","source":"https://github.com/openjdk/jfx","question":"Is OpenJFX open source?","confidence":0.95}]` |
| deployment.options | `{"on_prem":true,"air_gapped":true}` | `{"self_hosted":true}` |
| description.long | 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. | 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. |
| features.capabilities | `{"hot_reload_dev":true,"native_look_and_feel":false,"mobile_target_support":true}` | `{"mobile_target_support":true}` |
| integrations.count | 0 | - |
| language.primary | - | C++ |
| license.spdx | - | GPL-2.0 |
| market.availability | `{"hqCountry":"EE","primaryMarkets":["US","EU","GB"],"availabilityScope":"global","availableCountries":[],"notAvailableCountries":[]}` | - |
| platform.support | `{"ios":true,"mac":true,"web":true,"linux":true,"android":true,"windows":true}` | `{"cli":true}` |
| pricing | `{"type":"hybrid","plans":[{"free":true,"name":"Free","summary":"Free, open-source","features":["MIT licensed framework","Cross-platform support","70+ built-in controls","Community support via GitHub"],"contactSales":false},{"free":false,"name":"Plus","summary":"€299/seat/year","features":["Everything in Free","Avalonia for Visual Studio extension","Avalonia for Code (VS Code) extension","DevTools","Build MCP","DevTools MCP","Parcel MCP"],"commitment":"annual","components":[{"kind":"per_unit","unit":"seat","amount":299,"period":"year","currency":"EUR"}],"contactSales":false},{"free":false,"name":"Pro","summary":"€899/seat/year","features":["Everything in Plus","6 premium UI controls","70+ charts and data visualizations","Priority GitHub responses"],"commitment":"annual","components":[{"kind":"per_unit","unit":"seat","amount":899,"period":"year","currency":"EUR"}],"contactSales":false},{"free":false,"name":"Enterprise","summary":"€6,999/seat/year","features":["Everything in Pro","Commercial component source code access","SLA and dedicated engineering support","Quarterly technical check-ins","Long-Term Support releases","Air-gapped deployment support"],"commitment":"annual","components":[{"kind":"per_unit","unit":"seat","amount":6999,"period":"year","currency":"EUR"}],"contactSales":true}],"summary":"Free open-source tier; Plus from €299/seat/year; Pro €899/seat/year; Enterprise €6,999/seat/year","currency":"EUR","freeTier":true,"sourceUrl":"https://avaloniaui.net/pricing","retrievedAt":"2026-09-04T22:12:42.486Z","startingPrice":{"unit":"seat","amount":299,"period":"year","currency":"EUR"},"billingPeriods":["year"]}` | `{"type":"open_source","freeTier":true,"sourceUrl":"https://openjfx.io/","retrievedAt":"2026-09-08T13:38:37.552Z"}` |
| pricing.free_tier | yes | yes |
| pricing.model | freemium | commercial |
| pricing.price_level | high | free |
| pricing.starting_price | `{"amount":299,"currency":"EUR"}` | - |
| pricing.transparent | yes | yes |
| security.gdpr | yes | - |
| security.scorecard | - | 7.6 |
| security.vulnerabilities | - | `{"count":0,"source":"https://advisories.ecosyste.ms/api/v1/advisories?ecosystem=maven&package_name=org.openjfx%3Ajavafx-controls&per_page=100","last_12m":0,"max_severity":null}` |

## Capabilities (Desktop App Frameworks)

| Capability | Avalonia UI | OpenJFX |
|---|:--:|:--:|
| **Capabilities** |  |  |
| Native look and feel | ✗ | - |
| Bundled runtime | - | - |
| Auto update builtin | - | - |
| Code signing support | - | - |
| App store distribution | - | - |
| Hot reload dev | ✓ | - |
| Accessibility support | - | - |
| Mobile target support | ✓ | ✓ |
| Ide bundled | - | - |

*Source: vioscaleAI. Generated 2026-09-11T23:38:15.409Z. "-" = undocumented, not absent.*