It's very rare that I review apps and services that are not free. However, I found out about it's learning last month and was able to see a demo and I really liked it as a course management system.
it's learning is a web-based system containing course management tools that enable students and teachers to create multimedia learning experiences. You can create your own content or merge free and commercial content into the library.
You start with a dashboard that contains links to your courses, calendar, tasks, messages and more. The system is easy to navigate and quite intuitive.
Features include: course listings, project management, calendar, messaging, ePortfolio's, a library of lesson plans, full search, a community forum, tasks, blogs, built-in audio and video recorders, plagiarism control and much more.