1. Xc [https://xcfile.dev/] - an md-based task runner
2. Literate [https://github.com/zyedidia/Literate] - a literate programming tool
I like the literate programming tool. I've always liked experimenting with Jupyter notebooks, and I can see running markdown directly as replacing a lot of the ad hoc things I use them for.
It would be great to see Anthropic add support directly to Claude Code, and OpenAI to Codex. I think this sort of literate scripting will become more common this next year, especially as model reliability improves and the tool-use gets smarter.
It's a trivial project, but it has been useful for reference and documentation a time or two.
(Though I guess a Makefile would be the obvious alternative; that too is often a collection of named drivers/recipes within a project.)