Sage
Sage is an open source (free!) mathematics computing environment. It is based on the programming language Python, and has much in common with it. It is available for download at http://www.sagemath.org to a computer running any of the major three operating systems, but likely will require in excess of a gigabyte of space on that computer's hard drive. Most will likely choose to run it remotely, using the web interface within a browser. To do so, you must first obtain an account at http://www.sagenb.org, which also happens to be the website at which you will log in whenever you wish to run Sage.
Documentation
Notebooks for in-class SAGE demonstrations
Click on any of these links to see the commands and results of a class demo. The document will open as "Read Only", but at the top of the page should appear the words “Edit a copy,” should you wish edit commands and see the changes that occur as a result. The copy will become one of your personal notebooks.
This page maintained by:
Thomas L. Scofield
Department of Mathematics and Statistics,
Calvin College