R
raina_vissora
Guest
There are hundreds of them. It kind of depends on what you are wanting people to do once they're logged in. There are free forums like InvisionFree and phpBB, and there are free whole content management systems, like Drupal and Joomla.
Additionally, it's not that difficult to code yourself, and there are a variety of tutorials available on the web.
Additionally, it's not that difficult to code yourself, and there are a variety of tutorials available on the web.