2026
Avalonia 12
Avalonia 12.0 is released.
The people behind the framework
Avalonia is the open-source framework behind cross-platform .NET applications at NASA, JetBrains and Unity. This is the small team that builds it.
Our story
A side project that became infrastructure
Avalonia started as one developer's experiment in 2013. Today the same codebase drives applications at NASA, JetBrains and Unity, and 2.1M projects depend on it shipping to every major platform.
The company behind it is deliberately small and headquartered in Tallinn. We maintain the framework, ship the commercial tooling that funds it, and support the enterprises that bet on it.
Our journey
2025
A $3M vote of confidence
Devolutions commits $3 million to Avalonia's open-source development.
2023
Avalonia XPF
Avalonia XPF is announced, bringing existing WPF applications cross-platform.
2019
A company forms
The Avalonia UI company is founded in Tallinn to back the framework commercially.
2016
Perspex becomes Avalonia
The project takes the name it carries today.
2015
XAML arrives
XAML support lands, giving .NET developers a familiar way to describe interfaces.
2014
Beyond Windows
Initial cross-platform support takes the framework beyond a single operating system.
2013
A side project begins
Steven Kirk starts Perspex, an experiment in building a modern UI framework for .NET.
Our impact
410M+
Builds in the first half of 2026
2.1M
Projects using Avalonia
20
Avalonians worldwide
13+
Years of development
Commitments
What you can hold us to
Not values on a poster. Three commitments anyone building on Avalonia can verify.
We're MIT, always have been
The framework has carried the same license since 2013, and the paid products around it are additive, never gates. What is free today stays free.
Funded by products, not goodwill
XPF and the Plus and Pro subscriptions pay the salaries, and Devolutions fund the open-source work with $3 million over three years. Sustainability here is a business model, not a donation link.
Answered by the people who build it
Support tickets land with engineers who can reproduce the problem and fix the framework, and what they learn ships straight back into the product.
On the road
Where the framework meets its community
Conference stages, booth demos and community meetups: the same small team, out where .NET developers actually are.
The team
Meet the Avalonians. 20 people, 11 countries, small on purpose.
Mike James
Chief Executive Officer
Michael Sivers
Chief Operations Officer
Steven Kirk
Chief Technology Officer
Nikita Tsukanov
Chief Research Officer
Anastassia Pellja
Software Developer
Benedikt Stebner
Software Developer
Dalton Hurd
Head of Design
Dong Bin
General Manager, China
Emmanuel Hansen
Software Developer
Jan Kučera
Software Developer
Javier Suárez
Software Developer
Julien Lebosquain
Software Developer
Jumar Macato
Software Developer
Ken Ferguson
Software Developer
Luke Malpass
Developer Relations
Matt Lacey
Software Developer
Max Katz
Software Developer
Phil Dawson
Lead Test Engineer
Tim Miller
Software Developer
Yiu Luke
Technical Writer
Join the team and build the future of .NET UI
We're a small, engineering-led team building the best UI framework for .NET. If you want meaningful work with real autonomy, we want to hear from you.