there are actually many @aldi80s !
I personally use #Emacs and its #orgmode, but if you don't want to end up in the #rabbithole, I would say #wekan, the #TODO apps that live on the #IPFS, but also #trello if you want something of more mainstream..
there are a lot of #alternatives.. even just a plain text file syncronized wih #git or any other syncronization #software
@frayoshi trying #Wekan right now! Thanks !