One thing I would love to find as commercially friendly open source or want to buy or for up to $2 pr license is basically a single-site-browser creation kit (

One thing I would love to find as commercially friendly open source or want to buy or for up to $2 pr license is basically a single-site-browser creation kit (like mozilla prism) only with a few more added bells and whistles like quake-like slide-in, configurable window borders etc.