It seems like plain text has made a comeback among the generation that remembers Notepad and vim. The key thing is the focus on the routine and structure, rather than the choice of app or the styling. I've been putting together a collection of plain text applications:
Replaced a lot of awk for me, along with places I might have been tempted to use sqlite. Unfortunately never had much luck with the bash or c integrations.
+1 for plain text accounting. I'm using hledger^[0] to track my finances. I do use the web UI to submit information but I edit the plain text store extensively.
plain text todo / notes combination [https://jeffhuang.com/productivity_text_file/]
plain text accounting [https://plaintextaccounting.org/]
plain text academic publishing [http://www.sitzextase.de/blog/2017/02/22/plain-text/]
plain text organizer [https://danlucraft.com/blog/2008/04/plain-text-organizer/]
plain text daily diary [https://georgecoghill.wordpress.com/2018/01/01/the-one-line-...]