ASP.NET Development Helper by Nikhil Kothari - Useful for AJAX development and debugging
http://www.nikhilk.net/Project.WebDevHelper.aspx
ASP.NET Development Helper is a utility for ASP.NET page and control developers that plugs into Internet Explorer. It allows viewing information about the current page such as view state and trace, perform some operations on the server in the context of the running application to aid testing, and also allows monitoring requests and responses for diagnostic scenarios.
The tool requires beta 2 of the .NET framework v2.0. All features except the HTTP logs feature only work when the application is on http://localhost, in other words, it does not allow a remote user to interact with the server application.
The following is a list of features offered by the tool:
- A warning when either debug or trace have been turned on.
- Ability to hide trace information from the page, and view it in a separate dialog, so it does not get in the way of your page's layout.
- Ability to view the page's view state (in various forms: raw, parsed, and decoded) to help you optimize your state management logic.
- Ability to view items stored in cache, and remove them for testing purposes.
- Ability to shutdown the application (unloading the associated appdomain), in order to test starting it from a clean state.
- Ability to log all HTTP (and HTTPS) traffic between the browser and your server, and view request and response details.