Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
Gitea - A painless self-hosted Git service
Heroku - Agile deployment platform for Ruby, Node.js, Clojure, Java, Python, and Scala. Setup takes only minutes and deploys are instant through git. Leave tedious server maintenance to Heroku and focus on your code.
GitBucket - GitBucket is the easily installable open-source GitHub clone written with Scala.
Salesforce Platform - Salesforce Platform is a comprehensive PaaS solution that paves the way for the developers to test, build, and mitigate the issues in the cloud application before the final deployment.
GitLab - Create, review and deploy code together with GitLab open source git repo management software | GitLab