Elgg is described as 'Opensource social network engine' and is an app in the Social & Communications category. There are more than 10 alternatives to Elgg for a variety of platforms, including Online / Web-based, Self-Hosted solutions, Linux, Android and iPhone. The best alternative is Minds, which is both free and Open Source. Other great apps like Elgg are Friendica (Free, Open Source), HumHub (Freemium, Open Source), Movim (Free, Open Source) and BuddyPress (Free, Open Source).
SocialEngine is a PHP-based white label social network platform. Advanced social networking features include blogs, photo albums, user groups and forums, providing complete control over the layout and functionality of your social network, community, or portal.
Ning is the social platform for the worlds interests and passions online. Millions of people every day are coming together across Ning to explore and express their interests, discover new passions, and meet new people around shared pursuits.
Hiveflare is a social network platform that allows anyone, from regular people with a burning desire to create a great social community of their passion to the extreme professional company that want to build a community for their customers or a internet social network.
SocialGO allows you to build a custom social network, whether you are a beginner or a seasoned developer. No software, hosting or coding required, as our team offers full support for your social networking site.
mooSocial is the best social network script to create a niche community or social site. It is features packed, highly configurable, expandable with many quality add-ons. It is easily accessible thru mobile web or Android and iOS.
Jamroom is open source PHP social networking software where profiles are the main focus. Allows for multi-profile creation and has powerful media conversion systems for audio and video based communities.