Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
ModernCloud - A browser-based serverless platform that is open-source
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.
Serverless - Toolkit for building serverless applications
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.
Serverless Stack - Step-by-step tutorials for creating serverless React.js apps