I was initially skeptical of Obsidian, but... (1) It’s not proprietary - it’s a browser +/- IDE for markdown files. I point it at the folder in my Dropbox dire

I was initially skeptical of Obsidian, but... (1) It’s not proprietary - it’s a browser +/- IDE for markdown files. I point it at the folder in my Dropbox directory where I already keep all my md files. It’s a new front-end, but doesn’t lock me into anything. (2) As an extension of 1, I can continue using NotePlan as my calendar/todo on my phone (which builds everything into md files), and Kiwi to access all of the above on my phone as a personal wiki. (2) was already my workflow and knowledge base; Obsidian just made for a nicer editing/browsing tool on PC. The key is that, as what is essentially a wiki, both the files/notes and their interrelationships are conserved/non-proprietary, regardless of what happens to the chosen software in the future. No lock-in for any part of my calendar, workflow, or knowledge base, and all three can point to one another because it’s all just md in the same folder.