Jedi Knight Movement: Mailing list. Public archives and unmoderated discussion.
Jediism: Mailing list. Offers online archives available to the public. Discussion is limited to subscribers but is unmoderated.
The Jedi Creed: Information about the Jedi culture, the Force and their corresponding philosophies. Also contains a Jedi encyclopedia of Jedi information.
The Philosophy Science and Religion of the Star Wars Films: This site explains the science, religion, and philosophy of the Jedi.