You are at the top of the ports tree.
For information on how to use the ports tree, please look at "The Ports Collection" section of the FreeBSD handbook on your own FreeBSD machine or at the FreeBSD web site.
Also, if you would like to contribute a new port or fix an existing one, please refer to the Porting Guidelines section of the most current handbook.
Here are the one-line descriptions for each of the directories:
archivers: Archivers astro: Astronomical ports audio: Audio tools benchmarks: Benchmarking tools biology: Biology cad: CAD tools chinese: Chinese support comms: Communication utilities converters: Character code converters databases: Databases deskutils: Things that used to be on the desktop before computers were invented devel: Development utilities editors: Editors emulators: Emulators for other operating systems ftp: FTP client and server utilities games: Games german: German support graphics: Graphics tools and libraries irc: Internet Relay Chat utilities japanese: Japanese support java: Java language support korean: Korean support lang: Programming languages mail: Electronic mail utilities math: Mathematics mbone: MBone applications misc: Miscellaneous utilities net: Networking tools news: Network news palm: Software support for the 3Com Palm(tm) series print: Desktop publishing russian: Russian support security: Security tools shells: Shells sysutils: System utilities textproc: Text processing utilities (does not include desktop publishing) vietnamese: Vietnamese support www: Ports related to the World Wide Web x11-clocks: X11 clocks x11-fm: X11 file managers x11-fonts: X11 fonts and font utilities x11-servers: X11 servers x11-toolkits: X11 toolkits x11-wm: X11 window managers x11: Ports to support the X window system