The Free On-line Dictionary of Computing (30 December 2018):

Eden Programming Language

    (EPL) A language developed at the University of
   Washington, based on Concurrent Euclid and used with the
   Eden distributed operating system.

   EPL influenced Emerald and Distributed Smalltalk.

   ["EPL Programmer's Guide", A. Black et al, U Washington June
   1984].

   Eden