PBwiki is a wiki platform that allows anyone who accesses it to contribute or modify content. It was started in 2005 by graduates from Stanford University to be a collaboration tool. PBwiki is now the largest provider of hosted business and educational wikis, serving over 600,000 wikis and millions of users each month. PBwikis can be used for business, academic, and personal purposes to coordinate projects, share knowledge, communicate better, and involve more people through a central online space.