Atom for anything

Had to switch from Atom, messed up my files with old versions in some cache too many times. Too annoying, switched to Kate.

Geany is my pick if I had to pick just one IDE for everything. However, if I am forced to use Java I will pick Eclipse.

I'm using Visual Studio Code both at home and at work. *ducks*.
But seriously, it's MIT licensed and actually pretty good.

Visual Studio Code here too, in my case for web development, MS is doing actually pretty good things lately!
JetBrains Rider is my choice for C#.

I use Visual Studio Code

I use code::blocks, QtCreator and eclipse (but always an older version as they are more stable). Code::blocks is not really suitable for really large projects as the indexing grinds to a halt.

NetBeans for me, my favourite by the code I use to write (PHP and Java), but when using C I loved QT creator.

IntelliJ IDEA. There has never been better IDE for Java and I doubt there will be soon.

mainly working with emacs (plus some extension scripts)... it's still the fastest and most versatile way to write and edit code for me; especially if you also work on the documentation, configuration, scripts, ... other IDEs are too focused on a single language and totally ignore that there's a lot more than some source-code files to create and maintain a program..

sometimes using Qt-creator (mainly when doing stuff for android)....

for simple single file "projects" vim or mousepad.