Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Dokku - Docker powered mini-Heroku in around 100 lines of Bash
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Google Cloud Functions - A serverless platform for building event-based microservices.
Codeship - Codeship is a fast and secure hosted Continuous Delivery platform that scales with your needs.