I'm about an idea, onion routing.
Are there a secret or governments or a half-secret projects with similar technology?
For example, DARPA-BAA-10-69 is a project called "SAFER" (May 20, 2010).
The goal of the Safer Warfighter Communications (SAFER) program is to develop technology that will enable safe, resilient communications over the Internet, particularly in situations in which a third-party is attempting to discover the identity or location of the end users, or block the communication.
Is it a fork of earlier(Navy's) version of Tor?
Is there any fork of Tor? For example Navy's version. Or Navy use a torproject.org?