What is xllify?

xllify is a packaging tool and runtime that allows functions implemented in Luau and/or Python scripts to be made available as high performance custom functions for use in Microsoft Excel.

If you're still curious, check out the FAQs page.

CI/CD Integration

You can automate your XLL builds with GitHub Actions using the xllify-build action. This action handles building XLLs from your Python or Luau scripts in your CI/CD pipeline. This is particularly useful if you do not develop on a Windows machine!