I wrote a command line version of this.

[birlorg]

There doesn't seem to be any way to contact you except through an issue, so I figured I'd mention it here, I wrote a POSIX shell cmd line version of your GUI tool: https://bitbucket.org/zie/vpw

They work well together! :)

Anyways, feel free to close this. Just thought I'd give you an FYI sort of thing.