Like @fngjdflmdflg noted, years ago when i moved to linux (for personal use), I also had trouble finding a decent/similar replacement to Notepad++. I started do

Like @fngjdflmdflg noted, years ago when i moved to linux (for personal use), I also had trouble finding a decent/similar replacement to Notepad++. I started down the Geany route, and liked it alot. It is cross-platform, not slow, has lots of themes, customization options, etc. But eventually I stopped using it, and landed on Kate. For the life of me can't recall why i moved away from Geany? I have been a user of KDE Plasma for many years, but that's not the reason why i moved to Kate, because i actually was still a user of Geany for quite a while during my use of KDE Plasma. In any case, Geany is a really solid option. Not sure that Geany is a feature-for-feature, perfect alternative for Notepad++ (but neither is my favorite Kate editor either!)...nevertheless, the rare times when people ask me for recommendation of text editors on linux (or cross-platform with the intent of using the same editor on all their OSes), I often stick to suggesting Geany or Kate. And, then of course, if they're exclusively Windows users i then suggest either Notepad++ or Geany Kate - not necessarily in any order. (For the Windows machines that my dayjobs issue me, I still use Notepad++ since funny enough that is easier to allow then requesting to install Kate! Corporate world be getting all strict on software installations nowadays - yikes!)