OpenXava - OpenXava is a Web Java Framework for Rapid Development of Enterprise Applications.
Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
Vaadin Framework - Vaadin is a web application framework for Rich Internet Applications (RIA).
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.
jHipster - JHipster is a development platform to quickly generate, develop, & deploy modern web applications & microservice architectures.
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.