syncthing, sublime text and marktext would be my favourites, but you can get them on every other platform so I don't really think of them as Linux apps some of

syncthing, sublime text and marktext would be my favourites, but you can get them on every other platform so I don't really think of them as Linux apps some of my fav linux only apps would lutris for managing your steam and gog library from a single gui neofetch is a nice way to get a fancy readout of your system specs https://github.com/dylanaraps/neofetch https://github.com/dylanaraps/neofetch also just reading about ansible the last few days and i can see that becoming an instant fav for quickly setting up my computers. if I can get my head around it that is