I'm a huge fan of MDwiki. I've used it for documentation, class notes, work logs, and running a dnd campaign. Really good tool for people who want a no-frills markdown rendering client.
Kde Neon because I like all the new stuff the Kde team is doing. I have previously used Arch for yaourt as a package manager, but I value the reliability and compatability of an Ubuntu based distro, while getting all my obscure packages and tools through the repos myself.
https://www.cia.gov/library/readingroom/docs/CIA-RDP96-00787...