1. An open-source version of the UNIX operating system

Type of: UNIX, UNIX operating system, UNIX system

Encyclopedia: Linux Linux, Apache, MySQL, PHP

• subclass Acnidosporidia
• subclass Actinopoda
• subclass Alismatidae
• subclass Amphineura
• subclass Anapsida
• subclass Archaeornithes
• subclass Archosauria
• subclass Arecidae
• subclass Asteridae
• subclass Branchiopoda
• subclass Caryophyllidae
• subclass Cirripedia
• subclass Cnidosporidia
• subclass Commelinidae
• subclass Copepoda
• subclass Crossopterygii
• subclass Diapsida
• subclass Dibranchia
• subclass Dibranchiata
• subclass Dilleniidae
• subclass Dipnoi
• subclass Discomycetes
• subclass Elasmobranchii
• subclass Entomostraca
• subclass Euascomycetes