Algae-CMS is a minimalist content management system, written in Python, and designed to be hosted on Google's App Engine. Posts and pages are written in Markdown and content, CSS, and Javascript are all editable via the browser. Algae-CMS aims to generate elegant, valid HTML5 source code.

App Engine offers scalability and pricing that are hard to find elsewhere. Setting up a content management system that can scale past one server instance on Amazon's EC2 platform requires considerable expertise. Also, many users of Algae-CMS will likely fit into Google's free tier for the service.

On John Gruber's page for Markdown, he describes better than I could:

Markdown is a text-to-HTML conversion tool for web writers. Markdown allows you to write using an easy-to-read, easy-to-write plain text format, then convert it to structurally valid XHTML (or HTML).

For the purpose of this CMS, Markdown allows for rapid content creation without resorting to tools like CKEditor. This allows the author to have full control of their source code without having to always type commonly used tags.

Algae-CMS depends on two python packages, without which the project would not be possible.

markdown2, by Trent Mick.

gae-pytz, allows for parsing the datetime info in the App Engine datastore in a local timezone the site.