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.
Now Platform - Get native platform intelligence, so you can predict, prioritize, and proactively manage the work that matters most with the NOW Platform from ServiceNow.
Jelastic - Jelastic is a cloud PaaS and CaaS for hosting providers, ISVs, DevOps and enterprises. It can be used for Public, Private, Hybrid and Multi-Cloud deployments.
AWS Elastic Beanstalk - Quickly deploy and manage applications in the AWS cloud.