I found this collection from other website and I just wanted to post in here to share with everyone! Hope you enjoy the collection
APC ActionApps - http://www.apc.org/actionapps/
Ariadne - http://www.muze.nl/ariadne/
Back-End - http://www.back-end.org
Bitflux - http://www.bitflux.ch/developer/
Bricolage - http://www.bricolage.cc/
C-Arbre - http://realink.org/c-arbre/doc/
CAMPSITE - http://www.campware.org/campsite/
Cocoon - http://xml.apache.org
Cofax - http://www.cofax.org
Coranto - http://coranto.gweilo.org/
DaCode - http://www.dacode.org
DCP-Portal - http://www.dcp-portal.com
Drupal - http://www.drupal.org
Easy Publisher - http://www.easypublisher.com
Edit-X - http://www.edit-x.com/
Geeklog - http://www.geeklog.org
Krysalis - http://www.interakt.ro/products/Krysalis/index.php
Mambo - http://sourceforge.net/projects/mambo/
Mason - http://www.masonhq.com/
mCubes - http://www.mCubes.com/
Metadot - http://www.metadot.net
Midgard - http://www.midgard-project.org/
MMBase - http://www.mmbase.org
MySource - http://mysource.squiz.net/
N/X - http://nxwcms.sourceforge.net/
OpenACS - http://openacs.org/
OpenCMS - http://www.opencms.org
Pagetool - http://www.pagetool.org
phpCMS - http://phpcms.de/homepage/phpcms/index.htm
PHPNuke - http://www.phpnuke.org
PHProjekt - http://www.phprojekt.com/
phpSlash - http://www.phpslash.org
phpWebSite - http://phpwebsite.appstate.edu/
Redhat CCM - http://www.redhat.com/software/ccm/
Scoop - http://scoop.kur5hin.org
Slash - http://www.slashcode.com
Squishdot - http://www.squishdot.org
SSR - http://www.ssrtech.com/
TeaServlet - http://opensource.go.com/
thatware - http://www.atthat.com/
ttCMS - http://www.ttcms.com
Webgenerator-X - http://webgenerator-x.com
WebGUI - http://plainblack.com/webgui
WebMake - http://webmake.taint.org/
WebTop - http://webtop.newfangled.com
Wyona - http://www.wyona.org/
Xinity - http://www.xinity.org/
Xoops - http://xoops.sourceforge.net/
Zope - http://www.zope.org
EZ Contents - http://www.visualshapers.com
SiteWorksPro - http://www.siteworkspro.com/
VirtuaNews - http://www.virtuanews.co.uk/
PHP Nuke Free
Post Nuke Free
Open Effect Free
Uber PHP CMS Free (German)
Fire Site Free
EZ Publish Free (You can pay to recieve it on a cd with documentation etc)
Mira Server Pay: Single site - $179, Multi Site - $799
Site Box Free
Bee Hive Free version and Paid version (didn't have a price)
Mambo Server Free and Paid versions
Typo3 Free
Drupal Free
Harpia Free
PHP Portal Project Free/Pay
APC ActionApps - http://www.apc.org/actionapps/
Ariadne - http://www.muze.nl/ariadne/
Back-End - http://www.back-end.org
Bitflux - http://www.bitflux.ch/developer/
Bricolage - http://www.bricolage.cc/
C-Arbre - http://realink.org/c-arbre/doc/
CAMPSITE - http://www.campware.org/campsite/
Cocoon - http://xml.apache.org
Cofax - http://www.cofax.org
Coranto - http://coranto.gweilo.org/
DaCode - http://www.dacode.org
DCP-Portal - http://www.dcp-portal.com
Drupal - http://www.drupal.org
Easy Publisher - http://www.easypublisher.com
Edit-X - http://www.edit-x.com/
Geeklog - http://www.geeklog.org
Krysalis - http://www.interakt.ro/products/Krysalis/index.php
Mambo - http://sourceforge.net/projects/mambo/
Mason - http://www.masonhq.com/
mCubes - http://www.mCubes.com/
Metadot - http://www.metadot.net
Midgard - http://www.midgard-project.org/
MMBase - http://www.mmbase.org
MySource - http://mysource.squiz.net/
N/X - http://nxwcms.sourceforge.net/
OpenACS - http://openacs.org/
OpenCMS - http://www.opencms.org
Pagetool - http://www.pagetool.org
phpCMS - http://phpcms.de/homepage/phpcms/index.htm
PHPNuke - http://www.phpnuke.org
PHProjekt - http://www.phprojekt.com/
phpSlash - http://www.phpslash.org
phpWebSite - http://phpwebsite.appstate.edu/
Redhat CCM - http://www.redhat.com/software/ccm/
Scoop - http://scoop.kur5hin.org
Slash - http://www.slashcode.com
Squishdot - http://www.squishdot.org
SSR - http://www.ssrtech.com/
TeaServlet - http://opensource.go.com/
thatware - http://www.atthat.com/
ttCMS - http://www.ttcms.com
Webgenerator-X - http://webgenerator-x.com
WebGUI - http://plainblack.com/webgui
WebMake - http://webmake.taint.org/
WebTop - http://webtop.newfangled.com
Wyona - http://www.wyona.org/
Xinity - http://www.xinity.org/
Xoops - http://xoops.sourceforge.net/
Zope - http://www.zope.org
EZ Contents - http://www.visualshapers.com
SiteWorksPro - http://www.siteworkspro.com/
VirtuaNews - http://www.virtuanews.co.uk/
PHP Nuke Free
Post Nuke Free
Open Effect Free
Uber PHP CMS Free (German)
Fire Site Free
EZ Publish Free (You can pay to recieve it on a cd with documentation etc)
Mira Server Pay: Single site - $179, Multi Site - $799
Site Box Free
Bee Hive Free version and Paid version (didn't have a price)
Mambo Server Free and Paid versions
Typo3 Free
Drupal Free
Harpia Free
PHP Portal Project Free/Pay
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