 In 1992 , several months after the release of Net @-@ 2 , William <unk> and Lynne <unk> wrote replacements for those six missing files and ported BSD to the Intel <unk> @-@ based microprocessors and called their new operating system 386BSD . They released 386BSD via an anonymous FTP server . The development flow of 386BSD was slow and after a period of neglect , a group of 386BSD users decided to branch out on their own and create FreeBSD so that they could keep the operating system up to date . The first version of FreeBSD was released on November 1993 . 
