Google App Engine - A powerful platform to build web and mobile apps that scale automatically.

AWS Lambda - Automatic, event-driven compute service

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.

Google Cloud Functions - A serverless platform for building event-based microservices.

Apprenda - Apprenda is a software layer that transforms any infrastructure into a policy-driven, hybrid cloud application platform.

Firebase - Firebase is a cloud service designed to power real-time, collaborative applications for mobile and web.