I'll put in a word for Checkvist (https://checkvist.com/ https://checkvist.com/). I find it the best of the online outliners, which manages to improve year on y

I'll put in a word for Checkvist (https://checkvist.com/ https://checkvist.com/). I find it the best of the online outliners, which manages to improve year on year while maintaining its fundamental virtues (notably - it's the most keyboard-centric web app I've used). I noted (with a slight shock!) recently that I've been using it since 2015.