Well, the permanently open applications on my system are: claws-mail, Pale Moon (browser forked from Firefox), konqueror (TDE file manager), konsole (TDE terminal), and Aqualung (music player). Other good friends include kate, Inkscape, and OpenSCAD (despite its flakiness). And I get a lot of mileage out of DOSBox.

If the OP hadn't specified desktop software, I'd also name Portage.

Nothing Linux only but:

• Firefox
• OnlyOffice
• mpv
• DoubleCommander

xpenguins

Pinta. It's like paint.net but works on Linux. Quick and simple way to edit images on Linux.

ShotCut

Apostrophe. The perfect, slick markdown editor.

Kubernetes, Docker and mpv.

urxtv

Thanks for the recommendation, I installed Flameshot on Windows and it's quite a bit better than the built-in tool.

I both installed kwrite and kate... whats the huge difference there? That one is more code focused and has git implementstion but still the same?

Komikku