There are multiple ways to install programs using pkgsrc. The pkgsrc bootstrap contains a traditional ports collection that utilizes a series of makefiles to compile software from source. Another method is to install pre-built binary packages via the pkg_add and pkg_delete tools. A high-level utility named pkgin also exists, and is designed to automate the installation, removal, and update of binary packages in a manner similar to APT or yum.
pkgsrc currently contains over 10000 packages (over 11000 including work-in-progress packages maintained outside the official tree) and includes most popular open source software. It now supports around 22 operating systems, including AIX, various BSD derivatives, HP-UX, IRIX, Linux, Mac OS X, Solaris, and QNX.