FreeBSD is based on BSD a Unix distribution developed at the University of California, Berkeley. FreeBSD is built around features such as stability and speed. It is one of many linux operating systems such as Ubuntu, Fedora, CoreOS and Debian. It comes bundled with security, performance and high end networking tools which most other OS do not have. FreeBSD therefore has its internet server features as its chief selling point. With the ability to handle thousands of concurrent user processes at peak periods through memory efficiency and good response times. FreeBSD has pkg as the package manager, for all the default binary packages that ship with the OS. They are sufficient for any application that intends to build with FreeBSD packages from scratch. Pkg and its manual pages can be downloaded using FreeBSD's bootstrap utility.
FreeBSD is useful for embedded platforms such as intel, ARM chips and hardware platforms such as PowerPC and MIPS. Other network equipment such as routers, wireless access points and time servers and rely on FreeBSD's high end features for thier embedded computer design. Under the Berkeley open source license, which allows vendors to contribute their custom changes back, FreeBSD has become more useful for such applications. Currently having about 33,000 libraries for embedded devices, appliances, servers and desktop applications.
FreeBSD comes free of charge along with its source code. With its rich suit of ported features, it doesn't cost anything to download. It is however possible to contribute back to the software by simply submitting a bug report if you encountered a bad program or a committer if you extended certain features to work better. You could also contribute by donations to the FreeBSD Foundation which receives tax deductible contributions, for more information or write to: The FreeBSD Foundation, 2222 14th Street, Boulder, CO 80302 USA.