<p>I know about this question: <a href="https://stackoverflow.com/questions/100548/which-third-party-debug-visualizers-for-visual-studio-20052008-do-you-use">Which (third-party) debug visualizers for Visual Studio 2005/2008 do you use?</a></p>
<p>But I don't want to know what debug visualizers you use, I want to know which debug visualizers are <em>out</em> there.</p>
<p>I have only found Mole (<a href="http://www.codeproject.com/KB/macros/MoleForVisualStudioEdit.aspx" rel="nofollow noreferrer">http://www.codeproject.com/KB/macros/MoleForVisualStudioEdit.aspx</a>), which is great. But there has to be plenty more out there?</p>
<p>Enlighten me.</p>

From a quick web search...
There is the one referenced in the blog post from the related question:
http://blogs.msdn.com/dparys/archive/2007/10/23/das-debugger-visualizer-item-template.aspx
LINQ to SQL Debug Visualizer
Graphics Debug Visualizer
Windows Identity Debug Visualizer
Conchango XML Debug Visualizer
SubSonic Collections Debug Visualizer
PowerShell Debug Visualizer
Xml Visualizer v.2
WCF Visualizers Tool
WPF Dependency Object Visualizer
DB Connection Visualizer
Debugger Visualizer for BizTalk 2006: MessageContext
DataSet Debug Visualizer
GUID Debug Visualizer
Debug Inspector
WPF Brush Visualizer
Expression Tree Visualizer
ANTLR4 Parse Tree Visualizer
DateTime Visualizer