End of life
At one time the hallmark of all message board software, UBB.classic has seen its market share steadily decline, largely due to the growing number of database-driven forum software written in PHP, such as vBulletin and Invision Power Board. In 2001, Groupee (then known as Infopop) acquired WWWThreads, which was renamed UBB.threads. UBB.threads, which is written in PHP and uses a MySQL database, was offered as a higher-end complement to UBB.classic for about five years, but in the end, the two products became internal competition. Groupee announced that the 6.7 series would be the last version of UBB.classic. In the summer of 2005, Groupee announced plans for a new product that was supposed to replace UBB.classic as well as UBB.threads, and would use PHP/MySQL like UBB.threads.
On March 30, 2006, Groupee, Inc. announced that the previously announced replacement product would be called UBB.threads v7 and not a completely new product. However, much of the code of UBB.threads v7 is completely new since version 6 and incompatible with previous versions, and any "upgrade" from a UBB.classic or UBB.threads v6.x board would require an import as if it were a completely new product. UBB.Classic became an "end of life" and was no longer sold or supported on June 15, 2006.