[Original] recommend several development tools (come from Microsoft internal mails)

1. sysinternals suite.
Http://technet.microsoft.com/en-us/sysinternals/default.aspx
These are definitely the must-have tools. For example, procexp, procmon, pskill, strings, zoomit, accesschk.

2. nirsoft tools
Http://www.nirsoft.net/
Nirsoft also provides a large pool of excellent tools. for example shexview, the utility to manage the shell extensions in Windows Explorer. this tool is useful for shell cases. reglass, the best searcher of registry from my point of view. I frequently use it to trouble-shoot some com issues. gdiview, the tool to trouble-shoot the GDI handle leaks and so on and so forth.

3. Everything, a very fast file/folder locater,
Http://www.voidtools.com

4. autohotkey, A Scriptable hotkey utility,
Http://www.autohotkey.com

5. this is a light weight notepad like code editor for C #/VB. net/J #, while we often need to test a short piece of code, this editor is way faster than vs IDE. you don't have to create a solution for 10 lines of code, just paste the code in and hit run.
Http://www.sliver.com/dotnet/SnippetCompiler/

6. elevate.exe
Http://www.wintellect.com/cs/blogs/jrobbins/archive/2007/03/27/elevate-a-process-at-the-command-line-in-vista.aspx
A very simple utility to quickly elevate a process in Vista/2008

7. pebrowse
Http://www.smidgeonsoft.prohosting.com/
In my opinion, this is the best free PE analysis tool and static disassembler. it not only works brilliantly for the native modules, but also greatly supports. net assemblies. unfortunately, it appears that the above page no longer provides the download.

8. Miscellaneous
Spy ++, managedspy, oleview, reflector, depends, puretext, wmicodecreator, debugdiag, Fiddler, icacls, dbg, etc.
The list is too big and it's impossible to list all of them. You may also collect the tools by yourselves.

Welcome to recommend your tools if you want! Thanks in advance.