Below are the lists of Content Management Systems divided into generally accepted categories.
1024
AIOCP
AssoCIateD
bcoos
BigAce
Bitweaver
bloofoxCMS
CMS Made Simple
CMScout
contentNow
CuteNews
DBHcms
doop
DragonflyCMS
Drupal
e107
Eazy Portal
Elxis
EnanoCMS
Etomite
Exponent
exv2
eZ Publish
Falt4 CMS
Frog CMS
Fundanemt
FuzzyLime
Geeklog
GuppY
iGamingCMS
ImpressCMS
JAF CMS
Jasmine Portal
Jaws
Joomla!
Kajona
LightNEasy
Limeware CMS
LokiCMS
LoveCMS
Mambo
MDPro
memht
MODx
MonkeyCMS
Netious
Ovidentia
Pantha
phpCMS
php-Fusion
PHPizabi
phpnuke
phpwcms
phpWebSite
PlumeCMS
PostNuke/Zikula
PureEdit
RunCMS
Seagull
silverstripe
Siteman
sNews
Stash
TextPattern
TikiWiki
Toenda
TYPO3
TYPOlight
Website Baker
Xaraya
Xoops
YACS
eyeos
Flede
KnowledgeTree
Lime Survey
LoudBlog
Owl
phpFreeChat
PhpGedView
phplist
phpMyChatPlus
Simple Mailing List
vCalendar
WebCalendar
Dokuwiki
MediaWiki
QwikiWiki
UniWakka
WikePage
WikkaWiki
b2evolution
DotClear
eggBlog
FlatPress
Habari
LifeType
NucleusCMS
Pivot
Serendipity
Simple PHP Blog
Simplog
WB News
Wheatblog
WordPress
Zomplog
AEF Board
bbPress
Beehive Forum
DeluxeBB
FUDforum
fuzzylime forum
IceBB
Mercury
MYBB
MyTopix
nextBBS
Phorum
phpBB
PHPwnage
PunBB
Quicksilver
Simple Machines Forum
Unclassified NewsBoard
useBB
Vanilla
w-Agora
XMB
4images
Coppermine
Exhibit Engine
Gallery
LinPHA
minishowcase
Phormer
PhpWebGallery
PixelPost
Plogger
Singapore
Thickbox Gallery 2
TinyWebGallery
WEBalbum
ZenPhoto
zoph
razorCMS
cpCommerce
Freeway
Magento
OpenCart
osCMax
oscommerce
phpShop
ZenCart
