Microsoft has open-sourced the Windows Subsystem for Linux (WSL), making its source code available on GitHub, except for a few components that are part of Windows.

HJBC/Getty Images It took Microsoft long enough, but the company has finally open-sourced its Windows Subsystem for Linux (WSL) code. The announcement was made at the Build 2025 developer ...

Only two elements of WSL remain closed-source for now: an lxcore.sys kernel driver used for WSL 1 (the initial version of WSL that is still supported, though new installs default to 2019's WSL 2 ...