<ul><li>The Windows Subsystem for Linux (WSL) has been released as open source, with the code available on GitHub at Microsoft/WSL.</li><li>WSL components include command line executables, the WSL service, Linux init and daemon processes, and file sharing with WSL's plan9 implementation.</li><li>Additional open sourced components include microsoft/wslg and microsoft/WSL2-Linux-Kernel.</li><li>Still closed source components include Lxcore.sys, P9rdr.sys, and p9np.dll that are part of the Windows image.</li><li>WSL was initially based on lxcore.sys for WSL 1 but evolved into WSL 2 with native Linux kernel support.</li><li>The move to open source was driven by the need to keep up with the growing WSL community and feature requests.</li><li>WSL underwent several version releases, with the transition to the new WSL package happening in stages.</li><li>WSL 2 introduced significant improvements such as mirrored networking, DNS tunneling, and firewall support.</li><li>The strong community support behind WSL has been essential for its development and evolution.</li><li>The open sourcing of WSL aims to allow the community to directly contribute to the project's development.</li></ul>

The Windows Subsystem for Linux is now open source

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