On the macOS side, https://github.com/lima-vm/lima is the closest equivalent to WSL.

Parallels also has a commercial offering that does some nice GUI-level integration with both Windows and Linux VMs.

My understanding is that these are both built on top of some Apple API, and Parallels actually collaborates with Apple on making it work for their use case. So it's not the first-class support that you get from Microsoft with WSL, but it's still pretty good.