Waterken
From Erights
The Waterken Server is a web server and distributed app framework written in Joe-E, the object-capability subset of Java. It defines a distributed capability protocol in terms of JSON data sent over TLS, with cryptographic-capabilities (or web-keys) represented as https URLs.
CapWiki, a wiki with capability-based access control, has been built on Waterken/Joe-E, but is not currently operational. The reference implementation of Horton is expressed in Waterken/Joe-E.