Elgg is a free and open source social network software that has been around for many years.
Dzoic Handshakes has been around since 2005 and offers a really attractive interface with a good, solid, support structure.There are plenty of addons and themes and the community is large. Fully JSON api driven with endpoints to post, love, share and build relationships.Built from the ground up for social, Ning’s scalable hosted social network platform gives you the tools and expertise you need to publish and connect with your community – all in one place. All this at a fraction of the cost and time it would take to build.To learn how to contribute or work with us, drop us a line.Jostle’s enterprise social network makes it easy to inform & connect employees to get work done.Evoq Engage includes DNN's CMS, Evoq Content and adds numerous features to keep visitors engaged: discussions, ideas, blogs and answers, along with advocate marketing and gaming mechanics.
Boonex Dolphin is a popular option for those looking for quality social networking software.
The following is a List of Social Network Software and Platforms most commonly used to create communities that consist of sharing content in a means similar to Facebook, Linked In, etc.
Normally, this type of software contains the following components: They are often used to create hubs or networks based around a topic or common interest or within organizations as a means of encouraging social interaction.
Jamroom is a community CMS where each of the users of the site get a profile that is like a mini website within the main site. It is suitable to build any niche social networks from hobby enthusiasts, special interests, Social e Commerce, Social Maketing, etc.
Common Spot(tm) by Paper Thin is a secure Web platform that includes a content management system, a suite of marketing solutions, website optimization features, and an application development framework that allow organizations to create world-class Web experiences that drive impressive results.
As a bonus, their code is open sourced (but the product itself is not free).