RED is a stand-alone requirements engineering tool. It is based on Eclipse and offers a great variety of features and concepts. REDO is an online version of the editing capabilities of RED, allowing concurrent editing. RedCloud is a collaboration server for RED.
Go to the RED landing page for more resources.
REDO and RedCloud are not yet stable enough to be used by end-users. Thus, REDO and Redcloud do not yet have specific resources on the web.