Windows 10 developers can now bring their WinUI 3 apps to iOS, Android, macOS, and the web

iPhone X
iPhone X (Image credit: Al Sacco | Windows Central)

What you need to know

  • Uno Platform 3.6 launched today, and it supports Project Reunion 0.5.
  • Project Reunion 0.5 supports WinUI 3 and is the first production version of Project Reunion.
  • Developers can now use Project Reunion 0.5 to make modern apps with WinUI 3 and Uno Platform to bring the code of those apps to other platforms.

Microsoft announced the rollout of Project Reunion 0.5 earlier today. It's a major milestone in terms of Windows 10 development, in part because it is the first complete release of Project Reunion that includes WinUI 3. On the heels of that announcement, Uno Platform announced the release of Uno Platform 3.6. This updated version of Uno Platform allows developers to reuse their code from WinUI 3 applications on other platforms, including iOS, Android, macOS, the web, and Linux.

With the rollout of Project Reunion 0.5 and Uno Platform 3.6, developers can create modern apps on Windows 10 using the latest from WinUI 3 and then bring that over to all other major platforms.

In addition to support for WinUI 3, Uno Platform released additional controls for enabling end-user interactions with date and file input controls and a new Cupertino theme in the Uno Platform Gallery. Uno Platform already provided Fluent and Material themes before the update to version 3.6.

Uno Platform and Microsoft worked hand-in-hand for these releases, and it isn't a surprise that Project Reunion 0.5 and Uno Platform 3.6 came out within hours of each other. Speaking of that collaboration and the new technologies, Francois Tanguay, CEO of Uno Platform, said:

We are delighted to see WinUI 3 launch as part of Project Reunion and alongside WinUI. We are very proud to work closely with Microsoft to ensure Uno Platform can provide day-zero support for WinUI 3 and bring WinUI-built applications everywhere, including Web, Linux, macOS, iOS and Android.

Microsoft Partner Group program manager Mike Harsh also shared his thoughts:

With WinUI 3 – Project reunion 0.5 we are making investments to enable developers to improve Windows experiences. We are pleased to see open source projects like Uno Platform take that mission further by extending the reach of WinUI to Web, Linux, macOS, iOS and Android.

With support for every major platform, including the web, developers can now utilize Uno Platform to bring code from modern Windows apps built with WinUI 3 to just about every type of device that people work with.

Sean Endicott
News Writer and apps editor

Sean Endicott is a tech journalist at Windows Central, specializing in Windows, Microsoft software, AI, and PCs. He's covered major launches, from Windows 10 and 11 to the rise of AI tools like ChatGPT. Sean's journey began with the Lumia 740, leading to strong ties with app developers. Outside writing, he coaches American football, utilizing Microsoft services to manage his team. He studied broadcast journalism at Nottingham Trent University and is active on X @SeanEndicott_ and Threads @sean_endicott_.