For me, it’s hands down Flameshot. The best screenshot tool in the world - I’ve got it hooked up to my PrtScrn
key for super easy screenshots.
I also love Kwrite as a Notepad++ alternative, and KolourPaint as a MSPaint alternative
By far it’s Kate, even though I’m now a neovim user. It’s just a great IDE.
Cant go without kdeconnect anymore
Konsole
Definitely the clipboard manager. On kde, it’s klipper. This is actually such an underrated piece of software that I can’t live without. Windows has one too, but they added their’s a little after all the linux desktop environments got one by default.
If you enjoy KWrite & KolourPaint, give Spectacle a go for screenshots. Works amazing on my end and it’s built into most KDE OS spins along with KWrite and Kolour. While I know the name Flameshot, I’ve never actually needed it as Spectacle is solid!
If based on the thing I used most then it has to be Firefox!
If you want something more trivial but personal,
openttd
- the best game ever. :)