Usefull visual studio extentions
 

my favorite:
Visual Assist
Visual Leak Detector

what yours?

Devart Code Compare
both standalone and VS integrated.

The Visual Studio it's really complete. But I like this:

-Cosmos: to create a simple O.S in C#
-IronPython: to work with Python on VStudio.
-ReSharper: useful to make a better code.
-Telerik components: good design it's always good.
-Reflector plugin: to dissamble while you use VSudio.

I think this plugins are really useful.

me too, i'am using
- ReSharper for C#
- and Visual Assist for C / C++
programming

Indent Guides - http://visualstudiogallery.msdn.microsoft.com/e792686d-542b-474a-8c55-630980e72c30
Highlight all occurrences of selected word - http://visualstudiogallery.msdn.microsoft.com/4b92b6ad-f563-4705-8f7b-7f85ba3cc6bb
Disable No Source Available Tab - http://visualstudiogallery.msdn.microsoft.com/fdbb2036-471e-40a7-b20e-31f8fd5578fa

pvs-studio - advanced code-analyzing

For Me,
ReSharper but The two annoying things about Resharper are
1. It's High Resource/Memory Usage.
2. it always wants me to use "Var" when declaring variable types and this gets on My Nerves.
Other than the above issues, Resharper is Swiss Army Knife for me.

could you put more info pls?

reflector
vmware

CodeRush is not bad but it is resource hungry. If don't have a fast PC, it can be really annoying.

VisualAssist for VS below 2012,
VMWare,
Intel Parallel Studio

ViEmu, for Vim funs
WinGDB, linux remote debugger

Using mostly Visual Assist X and Atomineer :)

may i just paste homepage link

also you can find latest release from team NOY in google

yes, you right AvOid thanks...
here link