donate.ly - The Simplest Way to Fundraise.
Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
Give Lively - Give Lively is an online technology platform for the advancement of nonprofit fundraising.
Dokku - Docker powered mini-Heroku in around 100 lines of Bash
RallyUp - RallyUp is a dominating platform for making professional fundraising experiences for your nonprofit, company, school, team, or another group.
Google Cloud Functions - A serverless platform for building event-based microservices.