Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
cPanel - With its first-class support and rich feature set, cPanel & WHM has been the web hosting industry's most reliable, intuitive control panel since 1997.
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.
Plesk - Plesk puts all the automation, security, and technical tools an IT professional needs in one simple and easy to use dashboard.
AWS Lambda - Automatic, event-driven compute service
Virtualmin - It includes numerous features not in the GPL version (like script installers, resellers, HTML editor, an improved UI, mobile access, spam and virus filtering).