phpBB features:

Security   Designed with security as a priority   Powerful and extensive authorisation system   Strong encryption to keep passwords safe in the database   Support for both cookie and URI-based sessions Unlimited Forums & Categories   Unlimited forums can be organised into as many categories as you like   Private forums and those only for specified user groups   Powerful search facility	phpbb Test Forum
Message Posting   Message formatting with various font styles and sizes as well as allowing quoting, code display, image posting and automatic URL linking   Support of standard and extended BBCode tags and controlled HTML tags   Polls can be simply added to posts   Email notification of replies to your topics   Powerful topic subscription capability   Original emoticons to portray emotions Versatile User Groups & Forum Permissions   Powerful forum, user and group permission management   Control forum access to specified user groups   Control all aspects of the posting experience   Allow limited access to viewing, posting, replying and many other options Member Features   Unlimited members   Personal profile creation   Post counting and administrator-definable ranks for users   Email-like private messaging system   Supports local, remote and uploadable avatars Style and Customization   Multiple styles available for the user to choose from   Templates separated from the PHP code so that new layouts can easily be created or integrated with your current site design   Complete control of fonts and colors with cascading style sheets (CSS)   Active community creating addons and specialised modifications   Default style compliant with XHTML 1.0 and HTML 4.01 recommendations from the W3C	phpbb Emoticons Configuration More screenshots... Moderation Features   Topic editing   Mass delete/move/lock/unlock of posts   Topic splitting   Email-like private messaging system   Auto-pruning of old or unanswered messages on a per-forum basis option Easy to Use Administration Center   General configuration   Forum & category setup   Easy database backup and restore   Disallowed usernames   User authorization   Word censoring   Complete member management   Emoticon setup   Optional new post verification   Extensive ban management, ban by email address, username or single/multiple IP address or hostname   IP tracking of posts and posters   Mass emailing of groups and users by the administrator