From GhostBSD Wiki
In GhostBSD software can be installed in three different ways:
- OctoPkg is a GTK+ based tool to manage (search, install and uninstall) binary packages on BSD systems.
- FreeBSD's package manager PKG can be used to manage packages using the command line. (In versions before 10.x, the old pkg_* tools were used which worked slightly differenty.)
- FreeBSD Ports is one of the most useful and unique features of FreeBSD compared to most Linux distributions. If installed, it can be found under /usr/ports and contains the Makefiles (think "recipes" if you are new to this concept) used to automatically build (fetch source code, configure, compile, install) a vast amount of software. A menu-driven system allows you to tweak compile options which makes this an easy to use but extremely flexible method of installing software.