Last night I came across the following web site (http://www.visualstudiogallery.com/Default.aspx) which has a lot of Visual Studio Extensions available on it.
Like everyone else, I am a fan of "Free" software, so I went through all of the available add-ins and compiled the following list of "free but value-able" add-ins; check them out.
ASPX Edit Helper – very helpful tool if you are like me and code HTML code by hand.
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=b477bcc0-c68a-4435-9fd2-66ac32f83901
DotNetNuke WebControls Control Suite – consists of custom web controls such as Tree View, Menu, etc.
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=9908f00b-eea8-412f-88c2-b9386d82d604
Automating WPF Databinding with Visual Studio 2008
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=f141a456-4bdf-4cfa-a24f-7da99ef26152
CodeKeep – lets you store and search the code snippets.
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=69db6577-c031-4f53-8fb8-e553301353ca
ComponentOne IntelliSpell Community Edition – spell checking in Visual Studio!
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=40474c7c-f887-48cb-ba07-c098ff7b86da
Flat Solution Explorer – shows a non-hierarchical view of the solution items.
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=1f8a03d0-afa7-4588-b9dc-09adb381b224
HyperAddin – adding hyperlinks in your source code
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=49b1c42b-424b-44ce-9bb1-22b4ec91e577
PInvoke.net – creates the signatures of the Windows API.
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=9ca9d544-05d2-487b-ab49-31851483c1cc
PowerCommands for Visual Studio 2008 – adds some really useful commands in the Visual Studio UI.
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=df3f0c30-3d37-4e06-9ef8-3bff3508be31
Resource Refactoring Tool – extracts the literal strings from your source and moves those into resource files.
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=6ebe98b6-c344-4929-857c-6afebf51f4af
SharePoint SmartTemplates for Visual Studio 2008
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=7db7a141-2939-4cee-b62c-97732d3e2522
SlickEdit Gadgets for Visual Studio 2008
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=0253125f-285f-4490-ab2a-0f96011f20a6
SourceCode Outliner Powertoy – ever wanted to see the types and members of your code in tree format? This puppy provides just that!
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=bea9ed59-8857-4032-9666-9af1c1a33969
StickyNotes – sticky notes for your project and project items!
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=d467cd03-8393-4172-a25a-7a586577f4fb
XSLT Profiler Add-in – if you work with XSLT files, then you got to have it.
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=a6a4ab2b-89aa-45ab-bbbf-3e84ce44af82
GhostDoc – for .NET documentation
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=46a20578-f0d5-4b1e-b55d-f001a6345748
Web Service Software Factory Modeling Edition – create web services that follow the standard architecture and design patterns.
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=a2930549-4a26-4cd8-bc0d-5d12a74e5841
WCF Designer – the name says it all.
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=a21f8e20-1787-4d22-a5ef-8e8371d2e6f5
DB Connection Visualizer – pretty slick! Run SQL code while debugging
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=dc336e26-4617-4bcd-8fb4-5071c9ea030f
Visual Studio Tip of the Day Browser
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=9974a567-2d61-4eeb-9b92-bae86cc45210
VSWindowManager
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=cbf3965c-1286-4f16-8bc7-050ddf2c594a
NUnit integration in Visual Studio 2005
http://www.visualstudiogallery.com/ExtensionDetails.aspx?ExtensionId=cd382d01-524c-49fa-9cf8-a6d9ca3d3f25