WidgetSoftware.com

Fle3
Future Learning Environment is open-source web-based software for computer-supported collaborative learning (CSCL).
fle3.uiah.fi/

BSCW
(Basic Support for Cooperative Work) is a web based collaboration / groupware environment. It is a shared workspace system and supports document upload, event notification, and group management.
bscw.gmd.de/

Blackboard
A commercial product that provides comprehensive support for online course materials and distance learning.
www.blackboard.com/

Knowledge Environment for Web-based Learning
KEWL is an Open Source learning management system for the Microsoft Windows platform. It's easy to use and free, with many features.
kewl.uwc.ac.za/

WebCT
Web Course Tools - WBT authoring, delivery and management. Reseller of web "courselets". Authoring environment is entirely Web based.
www.webct.com/

Jones e-education
A full-featured online course manager developed at Jones International University (JonesKnowledge.com).
www.jonesadvisorygroup.com/

The Dialogue Project
A web-based collaborative communication tool that supports the building of learning communities. It encourages collaboration and information sharing among the learning communities in order to promote conversation, scholarship, and understanding.
dialogueproject.com/

Open Knowledge Initiative
OKI is an architecture for learning management systems being designed by a consortium of universities and organisations that includes MIT, Stanford and Harvard.
www.okiproject.org/

The Manhattan Virtual Classroom
An open source web-based virtual classroom system (written in C) that includes modules for discussion, chat, syllabus, handouts, assignments, grades, and private email.
manhattan.sourceforge.net/

Rank Exec Software
Search engine ranking tool and analysis.
www.rankexec.com/