ConnectMV benefits from open-source software. We like to return the favour by supporting the open-source community in the following ways.
We have been using Sphinx for a long time to generate good looking documents. We periodically supply answers on the Sphinx mailing list, and have contributed several Sphinx enhancements, such as the ability to use reStructuredText and Sphinx as a MediaWiki backend, and a MathJax extension (now included into the main branch of Sphinx).
We wrote ucomment as a way to publish books and interactive documents. This software allows web users to comment on a document, right at the point of relevance, e.g. a paragraph, an equation, an illustration, a snippet of software code. It also allows for searching a document. Other interactive features are planned.
We use this to publish our interactive guide to using R, Python and MATLAB. We will be using it to publish a book, Process Improvement using Data, later in 2011.