iSanFrancisco is your solution for travel to and living in the San Francisco Bay Area: It offers maps with major tourist sites pinpointed, a museum listing, a list of hostels and hotels, a list of landmarks, as well as weather information, traffic information, movie theater listing, and additional details, plus a travel journal editor. Whether you plan to vacation in San Francisco, or you're there to stay, iSanFrancisco has what you need.
Updated guide book.
iPyramid 
iRAW 
iSystem 