Google App Engine

Google App Engine is a free webapp hosting service that allows you to create and run web applications on google's infrastructure.

Features

• free
• hosted on google's infrastructure
• easy to get started
• 500 mb of space
• Python support (more languages to come)
• enough CPU and bandwidth for 5 million pageviews/month
• Datastores as data persistence layer (limited SQL databases)
• user authentication via Google's Users API (Google accounts)
• Django web framework with templating support

More info

• Developing and deploying an application on Google App Engine - video tutorial