What else tools that can help one like VIM?
I have learned and used many powerful tools of sorts, and VIM must be one the best and the most helpful tools for me. Many of them dispeared as time went by. But VIM lives, and still has its charm.
I started to use VIM from 2002. Now I can claim to be experienced user. I'd like to know what else tools that can help one(as programmer/software engineer) like VIM, except text editor, since I already have VIM.
Here I can list some other tool that helps me almost much as VIM --
GIT source code management
DiffMerge Diff tool with a nice GUI, on console, I used vimdiff.
Google Chrome I like its Console in developer tools, and its built-in support to userscript.
The tool must be used across platforms at least like Windows, Linux and Mac, and should be helpful to every developer regardless of what industry he/she works on.
What else can you list?