Extension Key for installed the usefull extenion in magento

Extension Key:-

http://connect20.magentocommerce.com/community/Mage_Productlist

http://connect20.magentocommerce.com/community/Crius_SkipStep1

http://connect20.magentocommerce.com/community/FreeQuickContact

http://connect20.magentocommerce.com/community/magento_easy_tabs

http://connect20.magentocommerce.com/community/Moo_CloudZoom

http://connect20.magentocommerce.com/community/Facebook_LikeBox

http://connect20.magentocommerce.com/community/Custom_Layered_Navigation

http://connect20.magentocommerce.com/community/AjaxCart

http://connect20.magentocommerce.com/community/EM_Quickshop

http://connect20.magentocommerce.com/community/Squirreltechnologies_Squeeqly

http://connect20.magentocommerce.com/community/easy_exploded_menu

http://connect20.magentocommerce.com/community/AGCloudRolloverToZoom