Today we’re very excited to announce the open-source release of the Windows Subsystem for Linux. This is the result of a multiyear effort to prepare for this, and a great closure to the first ever issue raised on the Microsoft/WSL repo: Will this be Open Source? · Issue #1 · microsoft/WSL.
That means that the code that powers WSL is now available on GitHub at Microsoft/WSL and open sourced to the community! You can download WSL and build it from source, add new fixes and features and participate in WSL’s active development.