Eduflow - Digital learning that actually teaches students something
SocialEngine - Socialengine PHP: Elevating Your Online Community Experience.
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mooSocial - mooSocial is the best social network script to create a niche community or social site.
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JomSocial - Open Source Social Networking Software. Award winning open source community software by JomSocial. This social networking software is widely used by many Joomla users.