A couple of days after my last post about tools for WPF debugging, I got the word that Snoop has been made open source and released on Codeplex. There are versions for both 32- and 64-bit systems, and even WPF 4.0 is supported.
This version of Snoop is based on version 2 of the original Snoop and contains a merge of the improvements done by different people, so it supports on-the-fly editing of properties, WPF interop scenarios (WPF hosting Windows Forms or vice versa), bug fixes including support for visual trees with more that 255 levels, among other improvements. Check out Cory Plotts’ blog post about the release.





