Example image of eyePlorer eyePlorer map for 'Free software': Source code Free software licence Public domain Free software movement Richard Stallman Free Software Foundation Alternative terms for free software Free and open source software Proprietary software Freeware Reverse engineering Computer software SHARE (computing) IBM Computer program Executable Software industry User (computing) Copyright GNU Project Hacker (programmer subculture) MIT Computer Science and Artificial Intelligence Laboratory GNU Copyleft Red Hat Sun Microsystems OpenCores Creative Commons Free culture movement Open source software Gratis versus Libre Free beer Freedom of speech Debian Free Software Guidelines Open Source Definition FreeBSD NetBSD OpenBSD Permissive free software licence Apache License Kerberos (protocol) X.Org Foundation Massachusetts Institute of Technology University of California University of Illinois at Urbana-Champaign Free Software Directory Apache HTTP Server Berkeley Software Distribution GNU C Library GNU Compiler Collection