Pagebull was number one in my The Best Search Engines For ESL/EFL Learners — 2007. However, it looks like Pagebull is the first web application that has appeared on any of my “The Best…” lists to go out of business.
Charles Knight from the excellent blog Alt Search Engines quickly and graciously responded to my request for suggestions of other similar search engines. Page Bull was great because it displayed screenshots of the search results and not just text, which works so much better for English Language Learners.
Charles recommended viewfour, which does as good of a job as Pagebull did, if not better.