Comment by glup

It’s interesting to note that there are very few repeated answers or “me too” type posts, which suggests that what works best is highly idiosyncratic and depends on a lot of factors (what you need to organize, with whom, and in what ecosystem).

I just use a [ ] in a plaintext. When I complete something I add an x, e.g. [x]. I haven’t found any shortcomings of this system yet.