NationBuilder - The world's first platform for leaders, handcrafted from scratch to help you grow your community and lead them to action.
WildApricot - WildApricot is a powerful cloud software to help you automate and simplify membership tasks.
Crowded Communities - The all-in-one community platform.
MemberLeap - Member Leap offers membership management, website content management, billing, event registration, and several cloud-based applications.
Ning - Ning is the social platform for the worlds interests and passions online.
Memberclicks - MemberClicks provides website and membership management solutions to small-staff membership organizations.