NationBuilder - The world's first platform for leaders, handcrafted from scratch to help you grow your community and lead them to action.
Rock RMS - Rock RMS is a community supported open-source Church Management System that provides innovative features to churches of all sizes.
Crowded Communities - The all-in-one community platform.
eCatholic - eCatholic provides a total content management system that helps Catholic parishes, ministries, & dioceses create websites & website design.
Ning - Ning is the social platform for the worlds interests and passions online.
ChurchInsight - ChurchInsight is a church website content management system (cms). It allows churches to have great church websites and the best church website designs.