Berkeley Software Distribution is the UNIX operating system derivative developed and distributed by the Computer Systems Research Group of the University of California, Berkeley, from 1977 to 1995. More at Wikipedia
Comparison of BSD operating systems - There are a number of Unix-like operating systems based on or descended from the Berkeley Software Distribution series of Unix variants.
BSD licenses - The phrase BSD licenses represents a family of permissive free software licenses.
BSD Daemon - The BSD daemon, nicknamed Beastie, is the generic mascot of BSD operating systems.
Bill Joy - William Nelson Joy, commonly known as Bill Joy, is an American computer scientist.
Marshall Kirk McKusick - Marshall Kirk McKusick is a computer scientist, known for his extensive work on BSD, from the 1980s to FreeBSD in the present day.
Keith Bostic - Keith Bostic is a computer programmer from the United States.
Özalp Babaoğlu - Ozalp Babaoglu, son of former Turkish foreign officer Nazif Babaoğlu and his wife Şükran Babaoğlu, born in Ankara, Turkey, is a Turkish computer scientist.