Xen Orchestra - A complete web UI for controlling a XenServer or Xen infrastructure.
Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
SolusVM - Solus Virtual Manager (SolusVM) is a powerful GUI based VPS management system with full OpenVZ...
Dokku - Docker powered mini-Heroku in around 100 lines of Bash
Virtualizor - Virtualizor is a powerful web based VPS Control Panel.
Google Cloud Functions - A serverless platform for building event-based microservices.