Is hosted by Travis-CI
... and Cloudbees BuildHive
Well, obviously it is based on a simple progression: jbj - kck - ldl - mem - nfn - ogo - php (which also gives you an idea about the distance to the real thing)
It is certainly not supposed to be an acronym for anything.
jbj is published under the MIT Licence
The regression test suite is based on the test suite of the PHP interpreter published under the PHP License.