What AvaloniaUI does

AvaloniaUI OÜ is an Estonian private limited company founded in 2019 and headquartered in Tallinn that develops Avalonia, an open-source cross-platform .NET UI framework licensed under MIT. The framework draws its own UI using the Skia rendering engine and targets Windows, macOS, Linux, iOS, Android, WebAssembly, and embedded Linux from a single XAML and C# codebase, with a forthcoming Impeller GPU renderer co-developed with Google's Flutter team. The commercial offering centres on Avalonia XPF — a fork of WPF that replaces the Windows-only DirectX renderer with Avalonia's cross-platform compositional renderer, enabling existing WPF applications to run on macOS, Linux, mobile, and the browser while preserving third-party control suites such as Telerik, DevExpress, Syncfusion, Infragistics, and Actipro.

Revenue comes from three streams: Avalonia XPF per-application licences sold in three tiers (Internal €9,500/app, Business €29,500/app, Enterprise from €124,500/app), Avalonia Accelerate/Pro subscriptions starting at €89/year that bundle premium components (Charts, Rich Text Editor, Tree Data Grid, Media Player, Markdown Viewer, On Screen Keyboard) and professional IDE tooling, and multi-year corporate sponsorships exemplified by Devolutions' three-year, $3M commitment in June 2025. Named production users include Unity, JetBrains, NASA, Autodesk, Devolutions, KLM, OutSystems, OnCue, and LINQPad, spanning gaming, developer tools, aerospace, enterprise IT, aviation, and low-code. Distribution is hybrid: a self-serve product-led open-source funnel (NuGet, GitHub, dotnet templates, VS Code and Visual Studio extensions) feeds a direct enterprise sales motion for XPF and Accelerate, complemented by a formal reseller and consulting partner programme and a customer portal at portal.avaloniaui.net.

The company reports 2.1M projects trusting Avalonia, 1-10 employees, and a growing open-source community with engineering contributions from Microsoft, JetBrains, Stripe, and Avanade. Strategic priorities reflected in 2025-2026 activity include a Microsoft .NET MAUI partnership that makes Avalonia the Linux and WebAssembly backend for MAUI, a Google Flutter Impeller co-development deal, embedded/IoT expansion via a minority investment in Wilderness Labs, Chinese hardware expansion via Loongson/LoongArch, and AI-assisted development tooling via a free MCP server supporting Claude Code, GitHub Copilot CLI, Codex, and VS Code agents.

Name

AvaloniaUI

Legal name

AvaloniaUI OÜ

Website

https://avaloniaui.net

Company type

Private

Founded year

2019

Operating status

Operating

Headcount range

1–10 employees

Short description

AvaloniaUI OÜ develops the open-source Avalonia cross-platform .NET UI framework (MIT-licensed, Skia-rendered) and the commercial Avalonia XPF WPF compatibility product, serving enterprise .NET teams, embedded developers, and cross-platform app builders with customers including Unity, JetBrains, NASA, Autodesk, and Devolutions.

Ownership category

akta.pro rank

Product category

Cross-Platform .NET UI Framework

NAICS

Custom Computer Programming Services (541511), Software Publishers (5132)

SIC

Services-Prepackaged Software (7372), Services-Computer Programming Services (7371)

akta.pro primary industry

Developer Experience Platforms for Enterprise (IDEs, CI/CD, Dev Portals) (HDAEAKAI)

akta.pro secondary industries

Platform Engineering & Internal Developer Platforms (IDP) (BPAEAKAC), AI Integration & Orchestration Platforms (Connectors, Workflow, iPaaS for AI) (HDAEANAI)

Keywords

• Cross-platform UI framework
• .NET UI development
• WPF compatibility layer
• XAML UI toolkit
• Desktop mobile web framework

Headquarters

HQ city

Tallinn

HQ country

Estonia

HQ region

Europe

Offices1 record

Markets served

GTM type

B2B

Offering type

Software

Cost components

Personnel, Technology or R&D, Operations, Marketing or Sales, Infrastructure

Revenue model

1. Avalonia XPF per-app licences: One-time per-application licence fees for Avalonia XPF, the cross-platform WPF compatibility layer, sold in three tiers (Internal €9,500/app, Business €29,500/app, Enterprise from €124,500/app) with multi-platform coverage scaling by tier and free 30-day trials.
2. Avalonia Accelerate subscriptions: Recurring subscription for professional tooling, premium components (Charts, Rich Text Editor, Tree Data Grid, Media Player, On Screen Keyboard, Markdown Viewer), DevTools, Parcel, and IDE extensions. Available via monthly rent-to-own subscriptions in EUR, USD, and GBP with permanent licence key after 12 consecutive months; starting from €89/year.
3. Professional services: Paid engagement services for organisations that need help designing, building, migrating, or integrating Avalonia and XPF applications, including a dedicated annual allocation of professional services bundled with corporate sponsorship packages.
4. Corporate sponsorship and GitHub Sponsors: Multi-year corporate sponsorship deals that bundle roadmap visibility, Accelerate licences, professional services allocation, and public recognition (e.g., Devolutions' three-year $3M commitment). Individual contributions flow through GitHub Sponsors with no commitments.

Pricing tiers

Go-to-market motion5 records

Distribution channels5 records

Marketing channels7 records

Core offering

AvaloniaUI develops and sells the Avalonia cross-platform .NET UI framework, which enables developers to build desktop, mobile, and web applications from a single XAML and C# codebase. The core framework is free and MIT-licensed, while commercial revenue comes from Avalonia XPF (a binary-compatible WPF compatibility product), Avalonia Accelerate/Avalonia Pro subscriptions bundling premium UI components, IDE extensions, DevTools, Parcel packaging, and the Build MCP server for AI-assisted development.

Product overview

AvaloniaUI OÜ sells a platform-plus-modules product portfolio centred on the open-source Avalonia cross-platform .NET UI framework. The core framework ships free and MIT-licensed with 60+ built-in controls and a Skia-based renderer; Avalonia XPF is a commercial fork of WPF that brings existing .NET apps to macOS, Linux, iOS, Android, and WebAssembly while preserving third-party controls (Telerik, DevExpress, Infragistics, Syncfusion, Actipro, SciChart, etc.). Around the core, Avalonia offers IDE extensions (Avalonia for Visual Studio Code, Avalonia for Visual Studio), developer tools (DevTools, Parcel, the Build MCP / DevTools MCP AI servers), a paid commercial tier (Avalonia Accelerate / Avalonia Pro) that bundles premium components — Charts, Rich Text Editor, Tree Data Grid, Markdown Viewer, Media Player, On Screen Keyboard — plus the new open-source WebView control, the Avalonia MAUI preview that brings .NET MAUI to Linux and the browser, and the headless testing platforms for XUnit and NUnit.

Differentiator

Problem solved

Functional benefit

Brands

• Avalonia XPF: Commercial fork of WPF providing binary-compatible cross-platform WPF execution on macOS, Linux, iOS, Android, and WebAssembly via Avalonia's renderer.
• Avalonia Accelerate
• Avalonia Pro
• Avalonia Build MCP

Products and services

• Avalonia (Core UI Framework) Free, open-source cross-platform .NET UI framework for building desktop, mobile, and web apps from a single XAML and C# codebase. MIT-licensed, with Skia as the default renderer. Targets Windows, macOS, Linux, iOS, Android, WebAssembly, and Embedded Linux.
• Avalonia XPF Commercial fork of WPF that maintains API and binary compatibility with managed WPF code, replacing the Windows-only DirectX renderer with Avalonia's cross-platform compositional renderer so existing WPF apps can run on macOS, Linux, iOS, Android, and WebAssembly.
• Avalonia for Visual Studio Code Free, fully featured VS Code extension for Avalonia development providing XAML previewing, IntelliSense, and project templates out of the box with no account or feature limitations.
• Avalonia for Visual Studio Visual Studio extension that supercharges Avalonia development inside Microsoft's flagship IDE with smarter editing features.
• Avalonia DevTools Runtime visual debugging and inspection tool for Avalonia applications exposing the visual tree, properties, styles, and layout. Includes a built-in MCP server (DevTools MCP) for AI-agent integration.
• Avalonia Parcel One-click app packaging tool for Avalonia applications, simplifying distribution builds across the framework's supported platforms.
• Avalonia Charts Interactive data visualization component with 70+ chart types for Avalonia applications across desktop, mobile, and WebAssembly, available as part of Avalonia Pro.
• Avalonia Rich Text Editor WYSIWYG rich text editing component for Avalonia applications across desktop, mobile, and WebAssembly, available as part of Avalonia Pro.
• Avalonia Tree Data Grid Powerful hierarchical data grid component for Avalonia, capable of embedding Avalonia controls directly in WPF views via Avalonia XPF's Mix & Match feature.
• Avalonia Accelerate (Avalonia Pro) Paid subscription tier bundling premium components (Charts, Rich Text Editor, Media Player, On Screen Keyboard, Markdown Viewer, Tree Data Grid), professional IDE tooling, DevTools, and AI-ready development features.
• Avalonia Build MCP Server Free MCP (Model Context Protocol) server connecting AI coding assistants directly to Avalonia documentation, enabling AI-assisted XAML generation and project-aware guidance.
• Avalonia Reseller & Consulting Partner Programme Two-track partner programme: Resellers & distributors resell Avalonia and XPF licences, while Consulting Partners deliver greenfield development, WPF/WinForms migration, and integration projects on Avalonia and XPF.

Quantifiable outcome

• Up to 1,867% FPS increase on complex layouts with 350,000 visual elements in Avalonia 12.
• +3 more outcomes

Named customers12 records

Segments5 records

Ideal customer profiles4 records

Technology focussed Yes

API detail

Has API

Yes

API docs

API detail

Core technology

AI maturity

App detail

Integration16 records

AI capability10 records

Feature6 records

Partnerships

Six partnerships are on record, tiered core strategic partnership enabling avalonia support for the chinese loongarch cpu architecture., flagship strategic and co-development partner on .net maui linux and webassembly support., flagship co-development partnership on rendering technology., core contributor and named production customer; logo featured in both 'contributions from' and 'trusted by' sections on the avalonia homepage. and minor open-source contribution relationship..

• Loongsoncore strategic partnership enabling avalonia support for the chinese loongarch cpu architecture.Strategic or Co-development Partner · 19 May 2026Avalonia 12 now runs on LoongArch, China's home-grown CPU architecture, through a partnership with the Loongson team, enabling Avalonia to support the Chinese hardware ecosystem.
• Microsoftflagship strategic and co-development partner on .net maui linux and webassembly support.Strategic or Co-development Partner · 13 November 2025Microsoft's .NET MAUI framework will use Avalonia's renderer to bring Linux and browser support to MAUI applications, based on .NET 11. Microsoft engineers also contribute to the open-source Avalonia project. The MAUI Avalonia Preview 1 was announced in March 2026.
• Google (Flutter team)flagship co-development partnership on rendering technology.Strategic or Co-development Partner · 7 November 2025Avalonia and Google's Flutter engineering team are collaborating to bring Impeller, Flutter's next-generation GPU renderer, to .NET. Impeller uses precompiled shaders and a hardware-accelerated pipeline to eliminate jank and reduce frame times on GPU-intensive workloads. Announced jointly and authored by Nikita Tsukanov for Avalonia.
• JetBrainscore contributor and named production customer; logo featured in both 'contributions from' and 'trusted by' sections on the avalonia homepage.Strategic or Co-development PartnerJetBrains is a named trusted production user of Avalonia and a contributor of code and engineering to the open-source framework. JetBrains' logo appears prominently in the 'Contributions from' and 'Trusted by .NET teams around the world' sections on the Avalonia homepage.
• Stripeminor open-source contribution relationship.Strategic or Co-development PartnerStripe is listed as a contributor to the open-source Avalonia framework in the 'Contributions from' section on the Avalonia homepage, with its logo featured alongside Microsoft, JetBrains, and Avanade.
• Avanademinor open-source contribution relationship.Strategic or Co-development PartnerAvanade is listed as a contributor to the open-source Avalonia framework in the 'Contributions from' section on the Avalonia homepage, with its logo featured alongside Microsoft, JetBrains, and Stripe.

Scale indicators8 records

Recent moves6 records

Expansion highlights6 records

Direct peers

• Uno Platform: Cross-platform .NET UI framework that competes head-on with Avalonia for WinUI/XAML-based apps on Windows, macOS, Linux, iOS, Android, and WebAssembly. Closest direct .NET-native competitor to both Avalonia and Avalonia XPF.
• Flutter (Google): Google's open-source cross-platform UI framework. Directly comparable to Avalonia as a single-codebase UI framework drawing its own UI via Skia/Impeller; Avalonia's ongoing partnership with the Flutter team on the Impeller renderer further tightens the overlap.
• .NET MAUI (Microsoft): Microsoft's official cross-platform .NET UI framework, comparable in target audience and ecosystem. Avalonia is now embedded as the renderer powering MAUI's Linux and WebAssembly targets, blurring direct competition with strategic partnership.

Broad incumbents

• Syncfusion: Large commercial WPF control and charting vendor. Avalonia XPF tracks Syncfusion compatibility (64 working, 7 issues) because customer WPF estates frequently include Syncfusion controls, making Syncfusion support a deal-qualifier for Avalonia XPF.
• Infragistics (Infragistics Ultimate UI for WPF): Long-established commercial WPF UI control suite. Avalonia XPF's tested compatibility matrix (33 working, 23 untested) reflects the vendor's relevance to Avalonia's enterprise migration use cases.
• DevExpress (Developer Express): Major commercial WPF/WinForms control vendor with broad enterprise footprint. Avalonia XPF's compatibility with DevExpress WPF controls (81 working, 24 issues) is a key adoption lever for Avalonia XPF in enterprise accounts.
• Telerik UI for WPF (Progress Software): Established commercial WPF control suite tested for Avalonia XPF compatibility (96% pass rate). Comparable as a paid WPF component vendor whose installed base Avalonia XPF depends on for binary compatibility.
• Actipro Software: Commercial WPF control vendor with deep enterprise adoption. Avalonia XPF explicitly tests Actipro compatibility (136 controls working, 9 issues, 8 untested), reflecting the dependency Avalonia XPF has on Actipro for binary-compatible migrations.

Emerging players

• React Native (Meta): Cross-platform mobile/UI framework with similar product-led open-source growth motion but a different language stack (JavaScript). Competes for cross-platform app mindshare but does not directly target .NET teams.
• Wilderness Labs ( Meadow / .NET nanoFramework): Embedded and IoT .NET platform; Avalonia made a strategic investment in Wilderness Labs in October 2025. Comparable as a complementary .NET-on-embedded platform rather than a direct UI framework competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat4 records

Key risks5 records

Key highlights7 records

Customer concentration

• GitHubgithub.com/AvaloniaUI
• Xx.com/avaloniaUI
• LinkedInlinkedin.com/company/avaloniaui

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds1 record

Investors1 record

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about AvaloniaUI