Blackboard
http://www.blackboard.com/

BlackBoard and MERLOT working together
http://www.edutools.com/course/news/detail.jsp?id=882

Vision
Transforming the Internet into a powerful environment
for the education experience.

WebCT
http://www.webct.com/

The WebCT Vision
WebCT's vision is to deliver innovative e-learning solutions to help institutions improve educational outcomes for students around the world. WebCT is a trusted industry leader in providing e-learning systems for educational institutions. Thousands of institutions in more than 70 countries worldwide are expanding the boundaries of teaching and learning with WebCT.
 
Focusing on Educational Outcomes

Desire2Learn
http://www.desire2learn.com/welcome.html

Solutions for Higher Education
We have built complete learning systems that are helping Universities, Institutes, and Colleges deliver online programs to hundreds of thousands of their students. We have a complete solution for our clients' needs, plus we provide more flexibility and better service and support than anyone else in the industry. Resources:

• Ohio State University, http://carmen.osu.edu/
• University of Wisconsin, http://uwsproject.desire2learn.com/
• Minnesota State Higher Ed, http://www.d2l.project.mnscu.edu/

Sakai
http://sakaiproject.org/

Open Source - community source software.
The Sakai Project is a $6.8M community source software development project founded by the University of Michigan, Indiana University, MIT, Stanford, the uPortal Consortium, and the Open Knowledge Initiative (OKI).

Moodle
http://moodle.org/

Moodle is Open Source software, which means you are free to download it, use it, modify it and even distribute it (under the terms of the GNU General Public License).

Moodle runs without modification on Unix, Linux, Windows, Mac OS X, Netware and any other system that supports PHP, including most webhost providers. Data is stored in a single database: MySQL and PostgreSQL are best supported, but it can also be used with Oracle, Access, Interbase, ODBC and others.