Ger80C
Registered
Emacs org-mode or Obsidian would be my privacy-first, platform-independent tools of choice now. They both have the advantage that you can start merely listing tasks in text files (which both of them use) hosted wherever you want. No software sucks you into their "interpretation" of what GTD is. I have never found a software that does GTD, not "GTD as the software programmers interpreted it". This was the reason for my to go analog for a time and why I only use Obsidian now (and may use org in the future). I do not ever again feel the constraints of a software cage being constructed around me.