Lately I've been working on GitGuard (https://gitguard.dev/) which is a flexible way to write approval rules / workflows for your GitHub PRs. Think GitHub's branch protections but with the power of a toy programming language.

Also my long-term project (4 years or so) has been CodeApprove (https://codeapprove.com/) which is a much better code review UI for teams on GitHub.

So, yeah, I am pretty into making GitHub better for teams!