SlimTune is a open source profiler and performance tuning tool for .NET based applications, written in C#, VB.NET. It provides nice set of powerful features, such as remote profiling, real time results, multiple plugin-based visualizations. The source code of SlimTune is available under the terms of the MIT License.The tool is nice free alternative to an commercial profiler.

Features

• Live Profiling – reports results while your code still running
• Remote Profiling – perform profiling proccess from a different computer
• SQL Database Storage – all results stored in SQL database
• Multiple Visualizations – different ways to present profiling results
•  Plugin Support – write your own visualization plugin

Download SlimTune profiling tool

XPath Visualizer is a simple tool, that lets you execute a XPath query and see the results. The .Net 3.5 is required to use the tool .

Features:

• Load the XML document from a filesystem file, from an HTTP URL, type it in, or paste (Ctrl-V).
• Automatically detect and display the XML namespaces in use, in the document, including those with and without explicit prefixes
• XPath query validation.
• Remembers 10 most-recently used XPath queries.
• automatically inject the default xml namespace into query expressions
• visualize the XPath query execution results on the XML document
• Easy scroll through the matched nodes of an XPath query
• strip XML namespaces from any document
• Remove matched nodes in the document
• Reindent or reformat XML
• After modifying the XML in any way, you can save the modified XML document to a new file

Download XPath Visualizer (Codeplex)