Same here, org-mode is going nowhere, it's one of those things that just works. From wikis, todos, document authoring, agendas, code notebook, ... On mobile, there's a few options, I made one, a web app called filestash: https://demo.filestash.app/s/hn . It has a lot of the org mode candies: agenda, todos, and the real org-mode exporters: HTML, PDF, Markdown, TXT, Latex, iCal, ODT and even beamer