Two frequently used network diagnostic tools have gotten beta updates this week.

Network Monitor is an adapter level capture program that can record and analyze protocol traces. If you join the Connect beta program for Network Monitor 3 you can get access to the latest Network Monitor 3.4 beta release. Network Monitor 3.4 has a number of improvements to the user interface, filtering system, and the included set of protocol parsers.

Fiddler is an HTTP proxy server that allows you to intercept and modify HTTP traffic for applications in a variety of ways. The Fiddler 2.2.9 beta is available for download and includes some significant improvements to performance and connection use.