V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

EFL
       Eiffel Forum License (Eiffel)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

EFL
       Enlightenment Foundation Libraries (GUI)


V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

EFL
       Emitter Follower Logic (IC)


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

Extended Fortran Language
EFL

   (EFL) A Fortran preprocessor to provide structured
   programming constructs much like C.  EFL is a descendant of
   RATFOR.  It is written in C.

   ["An Informal Description of EFL", S.I. Feldman].