WildApricot - WildApricot is a powerful cloud software to help you automate and simplify membership tasks.
Bloomerang - Bloomerang is a simple donor database and fundraising software solution that helps nonprofits decrease donor attrition and increase revenue.
MemberLeap - Member Leap offers membership management, website content management, billing, event registration, and several cloud-based applications.
Kindful - Nonprofit donor database + fundraising tools all in one
Memberclicks - MemberClicks provides website and membership management solutions to small-staff membership organizations.
Classy - Expressive, flexible, and powerful stylesheets for native iOS apps