Many have mentioned org-mode. I used it for years but have moved on to todo.txt and markdown. I use syncthing to keep notes up to date on my phone and computer. I edit with whatever is available on my desktop and I use markor notes on my phone.
I think this setup only lacks the recurring tasks option. I think org-mode can do that but I use my calendar for that.
This is a highly personal topic so I’d suggest trying as many things as you can. Something will stick eventually.
Is it dead or complete? For my purposes, it doesn’t need any changes.