GPL

GNU General Public License

Drupal

Characteristics

Programming language: 

PHP

Open Source as of: 

2001

License: 

Current major release: 

8

Available languages: 

65
Joomla!

Characteristics

Programming language: 

PHP

Open Source as of: 

2005

License: 

Current major release: 

3

Available languages: 

> 70
TYPO3

Characteristics

Programming language: 

PHP

Open Source as of: 

2001

License: 

Current major release: 

8

Available languages: 

50
Plone

Characteristics

Programming language: 

Python

Open Source as of: 

2000

License: 

Current major release: 

5

Available languages: 

65
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