I thought it gonna be fine to cross-post it from Patterns & Practices Guidance:

• Patterns & Practices Practices Checker - ASP.NET Web Applications Performance Code Review

The Patterns & Practices Practices Checker is a tool that helps you verify your applications against the patterns & practices performance recommendations for ASP.NET applications.

• Use Practices Checker to help you perform a manual code inspection by analyzing your application for potential coding and configuration settings that do not adhere to the patterns & practices ASP.NET Performance Checklist.
• Extend Practices Checker by allowing additional checklists to be created and checked.
• Developers can utilize built in search routines to search intermediate language, static text files and .configuration files for specific code patterns or settings.

Learn more.