Tools I like and use

It's now a casual thing to publish the tools you used, so here is my list (for a .Net developer):

• Visual Studio 2008/2010 Pro
• Visual Studio Power Commands Add-In
  
• Web Deployment Project 2008/2010
• JetBrains Resharper 5.x

• Sybase PowerDesigner
  
• Enterprise Library Blocks (Data, PolicyInjection)
  
• MyGeneration (Code Generation)
  
• MS Build (+ Commuity Tasks)
  
• NUnit
• Wix
• JetBrains TeamCity

• Redgate Reflector
• Redgate SQL Compare
• TortoiseSVN
• VisualSVN
• SandCastle + Help File Builder

• Firefox (with Firebug)
  
• Chrome
  
• Notepad++
  
• Softerra LDAP Browser
• Paint .Net
  
• TrueCrypt
• FileZilla
• SyncToy 2.0

If you'd like more tools, check out others' list

• Scott Hanselman's 2007 Ultimate Developer and Power Users Tool List for Windows