No longer applies
This comment is no longer applicable to Freenet.
Key Index Server
If you want to find out what others are inserting into Freenet, use the -keyindex option with the request client to get the list of keys registered with a particular Key Index Server. You can add a key to the list by using the -keyindex option with the insert client. You can also add and view keys manually from a key index server with your web browser. This is just a cheap hack to make it easy for beta testers to find keys to request.
There is a list of public key index servers at
An open, cross-platform journaling program.
A scientific plotting package.