Elgg is a community building platform written in PHP for Apache and MySQL. It gives you the tools to create active and vibrant learning communities, featuring Weblogging, podcasting, social networking, file storage, tag searching, customised user themes, gettext multi-language support, and more. Users can control exactly who has access to each bit of their profile, each blog post, file, etc., and then search using tags to find other resources and people related to the same topic. Although originally designed for education, it has a broad range of uses in a variety of different settings.
License: GNU General Public License (GPL)
Changes:
This release has been completely rewritten. It is very flexible and extensible, has excellent programming APIs, and runs well as a stand-alone network out of the box.
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