Elgg is a free and open source social network script program (php/mysql) that implements social networking with BLOG as the center
elgg: social network building platform
As a social network construction platform, elgg received rave reviews once it came out, and some even compared it to the famous moodle. This platform not only won the honor of the best social network open source CMS platform in 2007, but also received the highest praise from info world this year.
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