For now, we have no plans to launch an app for Windows, Linux or other Apple operating systems like iOS or iPadOS.
The Mac app uses frameworks and technologies that are exclusive to macOS. Having a native Mac app for Designers to work with lets them take advantage of a powerful tool built on a familiar platform.
However, our web app platform is entirely browser-based and works across all major operating systems. This means developers, managers and other stakeholders can view Sketch documents in their browser, inspect elements and even download production-ready assets from designs.