The Ruby-WebKitGtk bindings are usable. Clone them:

git clone git://github.com/danlucraft/rbwebkitgtk.git

or download them. I’m using the WebKit nightly r31823, YMMV. Build instructions for WebKitGtk are here.

To do:

• Finish the methods on WebView.
• WebHistoryList - done
• WebHistoryItem - done