We added "Open" to our organizational name name, to indicate that the packages will always be freely "open and available to use" by anyone. There will never be a cost to use them, or copy them. Additionally, it is our goal (although we arent there yet), that all packages will have publically open and easily reproducible build frameworks.
Between 2002 and August 2008, CSW packages were being hosted at blastwave.org. In August, we changed our name and domain name. If you are interested in the specifics of why, you may see see our history page