Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Dokku - Docker powered mini-Heroku in around 100 lines of Bash
Travis CI - Simple, flexible, trustworthy CI/CD tools. Join hundreds of thousands who define tests and deployments in minutes, then scale up simply with parallel or multi-environment builds using Travis CI’s precision syntax—all with the developer in mind.
Google Cloud Functions - A serverless platform for building event-based microservices.