Because Joomla is subject to the GNU / GPL all Extensions Components, Modules and Plugins are also subject to the GPL. But external media which is included in the packages may be subject to an other license. This doesn't violate the GPL because Javascript, SWF and Images doesn't link in any kind to the GPL code and are external stand-alone software / media.

These are the licenses we are using in our products:


This is the standard license for all components, modules and plug-ins. Javascript License

The Javascript license allows widely the freedoms of the GPL. The only restriction is about (re-) publishing, forking and using the scripts in 3rd party software which is not allowed.

We usually work for other (big) companies or develop proprietary software (Javascript code). There by we have big libraries of Javascript code.