All software packages and architectures available for e-learning delivery can be classified into one of two categories: asynchronous and synchronous. With asynchronous tools, learners work independently at their own pace. There are no scheduled classes where students get together to 'chat'. Synchronous learning is similar to a traditional classroom in that there is a scheduled time for the class to meet. Many courses will employ both synchronous an asynchronous modes to provide a rich learning experience.

Synchronous online learning can take a variety of forms. The most basic is audio conferencing with users dialing in to a central system. Newer software based systems such as Centra and Horizon Live do a good job of mimicking the traditional classroom with features such as: ability to raise your hand, applause, whiteboard, presentations, and application sharing. Visit the Centra web site for a demonstration on how a synchronous learning tool works.

Asynchronous learning is the most popular course delivery tool used in post-secondary instituituiosn. WebCT is an example of an asynchronous learning tool with features such as discussion boards, course materials, quizzes and assignment submission. Another popular asynchronous package is Blackboard, which has recently formed an alliance with Microsoft. Follow this link for a demonstration of the Blackboard system.