FreeBSD is an operating system of the UNIX family, which serves as a successor for AT&T within the BSD line created at Berkeley University. The first version of FreeBSD was introduced in December 1993. For about thirty years, a community of more than 300 developers has been performing the engineering work on it. The system has been widely used for Internet and intranet servers, desktop and laptop computers, as well as for embedded platforms. Now the system serves the needs of many commercial companies, computer specialists, individual users and Internet providers all over the world. The last version of the system was released in November 2019.