vBulletin Forum 4

vBulletin is software that is loaded onto a web server to allow you to create and manage online forums or discussion boards. It is designed and developed by Jelsoft Enterprises Limited.
If you have spent a little time on the Web, you will undoubtedly have come across a variety of discussion areas on websites that allow visitors to interact with each other. These discussion areas are generally known as ‘forums’, ‘boards’, or ‘communities’, and they are becoming very popular.