BuddyPress

NOT ON THE LIST IN 2016

Build a social  platform that you can use to set up  a social network for your company, school, sports team or niche community – all based on the power and flexibility of WordPress.

Website:  www.buddypress.org
Cost:   Free. Open source
Availability: Download
YEARLY RANKINGS
2015: –  2014:
 –  2013: –  2012: 85  2011: 90=  2010: –  2009: –  2008: –  2007: –