Lumeinshin
What made you switch off of Obsidian? I moved over from Joplin a month ago and have been really enjoying it, although getting it to sync with my phone was a pain.
For the question topic: I do a lot of audio related things and REAPER is the end-all of DAWs for me. It's smaller than 1GB, hyper customizable, and endlessly flexible. It has way more than you'd realize once you start right clicking everything, and was made by the same dude that did Winamp.
yt-dlp, ffmpeg, and mpv have all been really great to me as well. I ended up using mpv as a photo viewer due to it's borderless UI and opening speed.