I didn't spend time trying this but when I played with the Next Browser about a month ago it occurred to me that one could mix in application code with a local

I didn't spend time trying this but when I played with the Next Browser about a month ago it occurred to me that one could mix in application code with a local web server component and a web interface to combine browsing and a custom application in one app. One possible app idea might be a research tool that allowed annotating material on the web - really, anything app that used web content.