Performance Testing - ASP.NET Web Applications

The following are some of the tools (non-exhaustive) to conduct a "Performance Test" on ASP.Net web applications. Do share with us the ones you are using too.

• Web Capacity Analysis Tool (WCAT)
  A lightweight HTTP load generation tool primarily designed to measure the performance of a web server within a controlled environment.
  
  
• IIS Log Parser
  A powerful, versatile tool that provides universal query access to text-based data
  
  
• NetStat
  A command-line tool that displays network connections (both incoming and outgoing), routing tables, and a number of network interface statistics.
  
  
• Performance Monitor
  A simple yet powerful visualization tool for viewing performance data, both in real time and from log files.
  
  
• Microsoft Network Monitor
  A protocol analyzer that allows you to capture network traffic, view and analyze it.
  
  
• Redgate ANTS Performance Profiler
  A tool that provides .NET code profiling, integrated SQL and File I/O analysis, and powerful visualizations give you the most complete picture of your application's performance.
  
  
• Fiddler
  A Web Debugging Proxy which logs all HTTP(S) traffic between your computer and the Internet.
  
  
• Firebug
  Integrates with Firefox to put a wealth of web development tools at your fingertips while you browse.
  
  
• Google Page Speed
  Evaluates the performance of web pages and get suggestions on how to improve them.
  
  
• Yahoo YSlow
  Analyzes web pages and suggests ways to improve their performance based on a set of rules for high performance web pages.
  
  
• Visual Studio Team Foundation Test Suite
  An edition of Visual Studio that provides capabilities to perform various forms of testing.