jQuery is an open source JavaScript library. jQuery makes JavaScript programming much simpler.
The following are the notable corporate members of the jQuery foundation:
WordPress: (http://wordpress.org/)
IBM: (http://ibm.com/)
NeoBux: (http://www.neobux.com/)
Mozilla: (http://www.mozilla.org/)
Intel's Open Source Technology Center: (http://software.intel.com/en-us/oss)
Adobe: (http://adobe.com/)
You can find all about jQuery at their official website (www.jQuery.com).