Da keine allgemein anerkannte Open Content Definition besteht, sind die Lizenzen sehr heterogen.
Links
[1] http://www.opensource.apple.com/cdl
[2] http://creativecommons.org/licenses/by/1.0/legalcode
[3] http://creativecommons.org/licenses/by/2.0/legalcode
[4] http://creativecommons.org/licenses/by/2.5/legalcode
[5] http://creativecommons.org/licenses/by/3.0/legalcode
[6] https://creativecommons.org/licenses/by/4.0/legalcode
[7] http://creativecommons.org/licenses/by-nd/1.0/legalcode
[8] http://creativecommons.org/licenses/by-nd/2.0/legalcode
[9] http://creativecommons.org/licenses/by-nd/2.5/legalcode
[10] http://creativecommons.org/licenses/by-nd/3.0/legalcode
[11] https://creativecommons.org/licenses/by-nd/4.0/legalcode
[12] http://creativecommons.org/licenses/by-nc/1.0/legalcode
[13] http://creativecommons.org/licenses/by-nc/2.0/legalcode
[14] http://creativecommons.org/licenses/by-nc/2.5/legalcode
[15] http://creativecommons.org/licenses/by-nc/3.0/legalcode
[16] http://creativecommons.org/licenses/by-nd-nc/1.0/legalcode
[17] http://creativecommons.org/licenses/by-nc-nd/2.0/legalcode
[18] http://creativecommons.org/licenses/by-nc-nd/2.5/legalcode
[19] http://creativecommons.org/licenses/by-nc-nd/3.0/legalcode
[20] http://creativecommons.org/licenses/by-nc-sa/1.0/legalcode
[21] http://creativecommons.org/licenses/by-nc-sa/2.0/legalcode
[22] http://creativecommons.org/licenses/by-nc-sa/2.5/legalcode
[23] http://creativecommons.org/licenses/by-nc-sa/3.0/legalcode
[24] https://creativecommons.org/licenses/by-nc-nd/4.0/legalcode
[25] https://creativecommons.org/licenses/by-nc-sa/4.0/legalcode
[26] http://creativecommons.org/licenses/by-sa/1.0/legalcode
[27] http://creativecommons.org/licenses/by-sa/2.0/legalcode
[28] http://creativecommons.org/licenses/by-sa/2.5/legalcode
[29] http://creativecommons.org/licenses/by-sa/3.0/legalcode
[30] https://creativecommons.org/licenses/by-sa/4.0/legalcode
[31] http://creativecommons.org/licenses
[32] http://creativecommons.org/publicdomain/zero/1.0/legalcode
[33] http://www.dipp.nrw.de/lizenzen/dppl/index_html/dppl/DPPL_v1_de_02-2004.html
[34] http://www.dipp.nrw.de/lizenzen/dppl/index_html/dppl/DPPL_v2_de_06-2004.html
[35] http://www.dipp.nrw.de/lizenzen/dppl/index_html/fdppl/f-DPPL_v1_de_11-2004.html
[36] http://www.dipp.nrw.de/lizenzen/dppl/index_html/mdppl/m-DPPL_v1_de_11-2004.html
[37] http://www.eff.org/IP/Open_licenses/20010421_eff_oal_1.0.html
[38] http://web.archive.org/web/20050408042334/http://www.killerfish.de/fys/empl/empl_de.html
[39] http://www.ethymonics.co.uk/fml.html
[40] http://artlibre.org/licence.php/lalgb.html
[41] http://www.freebsd.org/copyright/freebsd-doc-license.html
[42] http://www.gnu.org/licenses/old-licenses/fdl-1.1.html
[43] http://nautix.sourceforge.net/docs/fdl.de.html
[44] http://www.giese-online.de/gnufdl-de.html
[45] http://www.gnu.org/licenses/old-licenses/fdl-1.2.html
[46] http://www.gnu.org/copyleft/fdl.html
[47] http://www.ram.org/ramblings/philosophy/fmp/hoffman_license.html
[48] http://www.ifross.de/ifross_html/ifl.html
[49] http://tldp.org/LDP-COPYRIGHT.html
[50] http://artlibre.org/licence.php/lalde.html
[51] https://ifross.org/Lizenzen/Lizenz_freie_Nutzung_unv._Inhalte.pdf
[52] https://ifross.org/Lizenzen/MuSoft-Lizenz.htm
[53] https://ifross.org/Lizenzen/Lizenz%20bestimmte%20Nutzerkreise.htm
[54] https://ifross.org/Lizenzen/Lizenz_fuer_freie_Inhalte.pdf
[55] http://opencontent.org/opl.shtml
[56] http://dmoz.org/license.html
[57] http://www.opengamingfoundation.org/ogl.html
[58] http://opencontent.org/openpub
[59] http://www.rootrecords.org/licenses.html
[60] http://www.openoffice.org/licenses/PDL.html
[61] http://openmusic.linuxtag.org/modules/freecontent/content/openmusic/green.html
[62] http://openmusic.linuxtag.org/modules/freecontent/content/openmusic/yellow.html
[63] https://www.ifross.org/?q=en/ii-licenses