[tobr]

I think the use case is pretty clear and simple, and somewhat appealing: You can use a todo list app of your choice, with whatever features you like, without getting locked in to a proprietary format.

Haven't used it myself, but if anyone has experience and/or recommendation for clients, I'd be interested to hear. It looks like it's been around for well over a decade.

[l_t]

I've followed Todo.txt from the beginning. It's an interesting project because it started without code, as just a Lifehacker post (back when it was very popular) about GTD-esque formatting for text files [0]. The actual application was built later [1] to simplify creating/querying todos in the files.

[0]: https://lifehacker.com/geek-to-live-list-your-life-in-txt-16...

[1]: https://lifehacker.com/geek-to-live-reader-written-todo-txt-...

[bravoetch]

It appears to share some qualities with bullet journaling.

[doctorRetro]

Thank you (and all other respondents) for clarifying that. The website doesn't do a great job of explaining it.