I looked for a blog post announcing this, and couldn't find it. But Antiwork's Github profile mentions:

  > Antiwork emerged from Gumroad's mission to automate repetitive tasks. In 2025, we're taking a bold step by open-sourcing our entire suite of tools that helped run and scale Gumroad. We believe in making powerful automation accessible to everyone.

That's pretty wild! I've always loved Gumroad's simplicity for creators and buyers. Now I guess people will have a pretty compelling option when searching "Gumroad open source alternative"