[jdxcode]

I wrote a detailed comment yesterday about this: https://news.ycombinator.com/item?id=42353634

tl;dr: mise has more functionality like parallel tasks, watching for changes, and comprehensive argument parsing support (including custom autocomplete)

the biggest difference is the syntax. just is more concise and you really need to learn the syntax in order to use it. In mise things are more verbose but I feel easier to read for someone unfamiliar with it.