Remote ssh: vim
Windows: Visual Studio, Notepad++
It really depends on the language, doesn't it? Funny that nobody mentioned Eclipse or Netbeans here, it was so standard 10 years ago for Java.
I mainly work with C++, Fortran, Python, in classical HPC/data science based work where I don't really make use of an IDE.
VS Code for misc files. It starts up way faster than IntelliJ when you need to do something quickly.
Vim on the server. For the record, I also use vim keybinding plugins for IntelliJ and VS Code.
I use (n)vim as my editor everything: making to-do lists (which I maintain in plain .txt files), writing TeX for school, and writing code.
When I don't have time to write my own features I use Sublime Text, BBEdit and Atom (for Markdown and docs)
(Edit: I was a pepper user long ago and wondered whatever happened... there's not much trace of it on the web anymore.)
I continue to enhance it. It's quite different. I have taken inspiration from KDevelop and QT Creator. I feel like it competes with any other editor our there. Dare I say Vi and Emacs too. I actually have a special interface for those users so they feel at home. A nice worksheet, built in shell, I wrote plugins for build systems like CMake, make, gcc, and also of course Git support. I wrote an iOS version that lets you use your Apple Pencil to hand write code, use it to edit existing code, save and commit back. I take your handwriting and convert it to proper letters/symbols/numbers , automatically.
Whew. I can list out more things if you want :-)
Thank you for being a Pepper user, BTW. I hope that you found it enjoyable while it was available. The old Windows, Linux and FreeBSD builds still work :-)
May try VS Code again soon
(neo)vi(m) if I have to.
echo,sed,cat in a pinch ;) (but really love a well configured nano and geany is really great as well)