The CoreCollective Windows on Arm (WoA) Working Group supports a growing self-sustaining Arm open source ecosystem for Windows.

We have a working group GitHub repo, where you can find info about our projects & file issues for the working group to review and discuss.

Joining

If your company is not yet a CoreCollective member, have your company sign and return the CoreCollective Membership Agreement found here. Membership is free. Once the membership agreement has been fully signed, you’ll be able to register and sign into the CoreCollective hub and join any desired Working Groups.

Mailing List

• Public mailing list archive mirror that non-members can subscribe to (read-only). Subscription details available on the mailing list subscription page.
• If you work for a CoreCollective member company, then you should register and sign into the CoreCollective hub and join any desired Working Groups, which will enable you to send emails to the working group mailing lists.

Projects

• Supporting Python packages natively on Windows on Arm — Status
• LLVM
• GCC
• Software product enablement
  • What works on Windows on Arm?
  • Windows on Arm Software Ecosystem Dashboard
  • Tools for Arm development, including:
    • VS Code extension with GitHub Copilot chat integration for porting x64 Windows applications to Arm64
  • Arm AppReady: developer resources, tooling guidance, and engineering support for building native applications for WoA
• FFMPEG ARM64EC binaries are now publicly available

Package and App Status (historic)

If you are looking for status or build instructions for Windows on Arm on a specific project, here is a list of the historic status and work carried out up to end of 2025.