1. Early PL/I. 2. Experimental ProgrAMming Language. 3. Eden ProgrAMming Language. U Washington. Based on Concurrent Euclid and used with the Eden distributed OS. Influenced Emerald and Distributed Smalltalk. "EPL ProgrAMmer' s Guide", A. Black et al, U Washington June 1984. 4. Equational ProgrAMming Language. Szymanski, RPI. Equational language for parallel scientific applications. "EPL - Parallel ProgrAMming with Recurrent Equations", B. Szymanski in Parallel Functional Languages and Compilers, B. Szymanski et al, A-W 1991.