Example image of eyePlorer eyePlorer map for 'FreeBSD': American Telephone & Telegraph Berkeley Software Distribution Free software Operating system Unix Unix-like Application programming interface Device driver Kernel (computing) Linux distribution Revision control Shell (computing) Source code Userland (computing) FreeBSD Ports 386BSD Patch (computing) Software development Fork (software development) Free Software Foundation Jordan Hubbard Walnut Creek CDROM AT&T University of California, Berkeley Unix System Laboratories USL v. BSDi Carnegie Mellon University Mach (kernel) Simtel Yahoo! Executable and Linkable Format Symmetric multiprocessing AppleTalk Internetwork Packet Exchange IPsec IPv6 Stream Control Transmission Protocol Soft updates Full disk encryption GEOM RAID Unix File System ZFS Access control list Capability-based security Mandatory access control Common Criteria Robert Watson (computer scientist) Trusted Computer System Evaluation Criteria FLASK