Been awhile since I saw a thread like this and they’re always good for at least one or two things I’ve never heard of before. Bonus points if the software is open source and cross platform. Extra bonus points if you link to where we can see it/get it.
My contribution: Destiny which is an anonymous, P2P, E2EE file sharing app - its basically a GUI for a Magic Wormhole implementation. Works on Linux (tarball or appimage), Win, Mac, Android (inc f-droid) and iOS. Only downside is it’s not been updated for 2 years.
Screen2Gif is super useful when trying to show someone how to do something without doing a zoom or screen share. And gifs post in slack really well.
ffmpeg -video_size 1920x768 -framerate 25 -f x11grab -i :0.0 output.gif