Even though I’m not a Microsoft fan, I’ve tried most editors and IDEs out there. While I’m a huge VIM fanboy, for pure debugging of C/C++, Visual Studio beats everything else hands down.
The latest VS Express is superb, support of C++11 etc.
For Java Coders IntellijIdea + CHelper is awesome combination 
HODOOOOOOR!!!
Depends on Language you prefer.
Java- undoubtedly NetBeans
C/C++ - Dev CPP
Android- Eclipse
Web Designing- Macromedia Dreamweaver or Adobe Dreamweaver
If you’re using windows then i would suggest Visual studio otherwise for linux use -> CodeBlock…
I’m using windows now obviously i would have Visual studio.
for c or c++ use code blocks and for java net beans .
check your code at ideone before submitting on codechef .
i think it helpful for you.
Ubuntu+gedit+terminal is all time best …
Can’t Compare Visual Studio with any of the IDE’s, but to mention, Vim is the worst editor I have ever used, Icannot just understand what it needs to get prepared for writing a code! Hrrible Interface , like I am using a Windows 95 PC.
I use the Dev-C++ for CPP codes. Great interface, good code completion. Terrific!
I use “Geany” for all coding related stuff, and I love it.(I’m on Ubuntu)
I’ll give it a chance, this “multi editing” feature looks fine 
I have been using this for quite some time. Just love it. Superb editor.
Good one for online code judging. I use this quite a lot too. But my preference is, write code in some editor in my system (I use Sublime Text 2), and then compile and run it online.
I agree… It is a matter of taste. I was also looking for some IDE (editor + compiler + linker + whatever the need be). But ever since I started using Sublime, I am happy with sublime + ideone.com 
(Occasionally, I use the terminal as well, for compilation and execution).
As a fanboy :P, I use Visual Studio for everything (C++, C# and Python).
Fantastic editor
After reading this i downloaded sublime . But i am unable to compile and run program using sublime.Do i need to compile using cmd?? plz help…
i have already installed gcc compiler.
@abhi : You can either use terminal or use the way suggested here http://discuss.codechef.com/questions/15926/how-to-compile-and-run-cc-code-from-sublime-text-2-editor/16067
+1 Vim is really a life saver. It supports code completion too!
Surely Sublime is the best