Please note that the content of this book primarily consists of articles available from Wikipedia or other free sources online. UBB.threads (formerly WWWThreads) is an Internet forum software package written by Rick Baker. Written with PHP using a MySQL database backend, it is comparable to other forum software written in PHP. WWWThreads was originally written in Perl starting in 1997, then a PHP version was made in 2000. WWWThreads was notable for being one of the first forum software packages to support both flat and threaded discussion. In 2001, WWWThreads was acquired by Infopop Corporation (later known as Groupee, Inc. and now known as Social Strata), owners of the Ultimate Bulletin Board software. It was consequently renamed UBB.threads.