donate.ly - The Simplest Way to Fundraise.
Bloomerang - Bloomerang is a simple donor database and fundraising software solution that helps nonprofits decrease donor attrition and increase revenue.
RallyUp - RallyUp is a dominating platform for making professional fundraising experiences for your nonprofit, company, school, team, or another group.
Kindful - Nonprofit donor database + fundraising tools all in one
Give Lively - Give Lively is an online technology platform for the advancement of nonprofit fundraising.
Classy - Expressive, flexible, and powerful stylesheets for native iOS apps