DigitalOcean - Simplifying cloud hosting. Deploy an SSD cloud server in 55 seconds.
Jenkins - Jenkins is an open-source continuous integration server with 300+ plugins to support all kinds of software development
Google Compute Engine - Google Compute Engine is not just fast. It’s Google fast.
CircleCI - CircleCI gives web developers powerful Continuous Integration and Deployment with easy setup and maintenance.
Microsoft Azure - Windows Azure and SQL Azure enable you to build, host and scale applications in Microsoft datacenters.
Travis CI - Focus on writing code. Let Travis CI take care of running your tests and deploying your apps.