SearchBar is a new type of browser history that supports complex Web investigations by assisting with task resumption and information re-finding. SearchBar accomplishes these goals by proactively and persistently storing query histories, browsing histories, notes, and ratings in an interrelated fashion. Current UIs also treat search as a solitary experience, but users often need to collaborate on searches, such as students working together on homework or families jointly planning a vacation. SearchTogether enables groups of remote users to collaborate on Web search, synchronously or asynchronously, by providing group query histories, shared comments and ratings, automatic distribution of search results, session summaries, and integrated chat. CoSearch enables groups of collocated users to collaborate when sharing a single PC, as often occurs in schools and libraries, by enabling group members to use their phones as input devices: Users can send text messages to the computer to queue up query terms and can use their phones’ joysticks to operate cursors on the PC to queue up browser tabs for group viewing. Relevant products: IE, Live, Messenger, Communicator.