ULOSINO closes May 25th

Since launching in November 2021, we haven't been able to make this culture better in the ways we had hoped. We want to take the time to make ULOSINO the best it can be as a set of tools to build up open source operating system culture across the world.

We have made the choice to sunset ULOSINO by May 25th. Osopcloud will replace ULOSINO in September. Thank you for using ULOSINO.


SerenityOS is an open-source OS targeting the power-user market. A "love letter to '90s user interfaces," Serenity takes a unique approach to the graphical Unix-like operating system. The backend of the operating system is completely custom, operating, in theory, like Unix - but it uses a cohesive collection of custom system services, in a manner similar to macOS (in that the system services have been built at the same time). POSIX threading and signals, "I/O redirection," a Unix-like libc, and the ex2 file system are also used. For the graphical user interface, contributors have pulled off a comprehensive copy of Windows 95. Modern Markdown and JavaScript libraries, a custom web browser and email client, piano software and "various" games are also included. It feels like you're in the 1990s - but the project takes this as its key strengths. Serenity sure does have a unique position in the game and fulfills a gap in the game.

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Preinstalled DesktopSerenityOS GUI
Preinstalled BrowserSerenityOS Browser
Package ManagerSerenityPorts
Startup ManagerSystemServer
LicenseBSD 2-Clause
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