BitBucket - Bitbucket is a free code hosting site for Mercurial and Git. Manage your development with a hosted wiki, issue tracker and source code.
Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
GitHub - Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Dokku - Docker powered mini-Heroku in around 100 lines of Bash
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab
Google Cloud Functions - A serverless platform for building event-based microservices.