Here are some favorite tools of mine that I use today.
Editors and IDE: VSCode, PyCharm, Android Studio, IntellyJ IDEA and HeidiSQL.
Tools: Git and Docker.
And the ones I used in the past:
MS Visual Studio, Eclipse, vim, SVN, TFS, Atom, Qt Creator, Notepad++, Workbench, redmin, Code::Blocks, Code Lite, Bluefish, KDevelop, Geany, Anjuta, IDLE, Lazarus IDE, Delphi RAD, Embarcadero Delphi IDE, QEdit, MS-DOS Editor...