facileManager - facileManager is a modular suite of web apps built with the system administrator in mind. Say good-bye to manual management of services running on multiple servers.
Google App Engine - A powerful platform to build web and mobile apps that scale automatically.
Atomia DNS - Atomia DNS is a free & open source DNS management system.
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.
Admin4 - Admin4 is a tool for server maintenance via several plugin modules, running on Windows, Mac OSX, Linux and many more platforms. Currently, plugins for BIND DNS, LDAP, IMAP and PostgreSQL are included.
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.