Z2BB was a planned custom-made message board system for the unique needs of the Z2 Fora. It was heavily influenced by, and was intended to be mostly compatible with, the phpBB bulletin board system. Its developers were Quantum P. (supervisor), Revvy, and FSFunky.
Z2BB was started with the intent of creating a message board system that would not be subject to phpBB's security problems and the related problematic upgrades. Although this was the major priority, the project was also used as an opportunity to brainstorm new features. Some of the proposed features included an improved emoticon selector and a system for ranking users. However, the move to Belsambar caused many of the problems with phpBB to disappear; as a new message board system was no longer needed, development on Z2BB ceased.