My 5 favorite open source operating systems that aren't Linux

Looking for non-Linux open-source options? From ghosts of past operating systems to fascinating works in progress, here are my top picks.
Liliputing

Windows Subsystem for Linux is now open source (mostly)

The Windows Subsystem for Linux (WSL) is a set of software tools that basically lets you install and run native Linux applications on a Windows PC without rebooting ...

Advancing Open Source Patent Protection: Preservation of OIN 2.0 Source Code

Open Invention Network (OIN), the only organization dedicated to mitigating patent risk in open source software (OSS), today announced the preservation of the source code that makes up OIN 2.0’s Linux ...

Linux users just dodged California’s age-verification crackdown

Lawmakers amend California’s Digital Age Assurance Act, exempting Linux and other open-source OS from upcoming ...

Microsoft ushers in AI-native era with open agentic stack, Linux updates

Microsoft today revealed the upcoming public preview of Azure Linux 4.0 on Azure Virtual Machines and the general ...
Linux Journal

Debian Experiments with AI-Assisted Bug Triage as Open-Source Projects Face Growing Report Overload

The Debian project has begun exploring AI-assisted bug triage workflows, joining a broader movement across the open-source ...
SDxCentral

Microsoft pitches Azure Linux for AI-native infrastructure

Announcements link hardened Linux, Kubernetes, and supply chain security to emerging AI-native infrastructure demands ...
Neowin

Microsoft open-sources Windows Subsystem for Linux ahead of 10-year anniversary0 0

Microsoft has made its Windows Subsystem for Linux open source. The announcement was made as its BUILD 2025 developer conference. At its BUILD 2025 event today Microsoft has announced the ...