I’d like something similar to Gerry Shaw’s regex tool,
… but for XPath.
I’d prefer a standalone tool, free, built on .NET, WinForms or WPF.
EDIT:
I found this one on codeplex, which fits my requirements as stated, but it’s sort of feature-free. It doesn’t even resize.


I wrote a free option.
If it looks interesting or useful to you, you can download the source or binary for yourself.