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

ECMA International

    (Formerly European Computer Manufacturers Association)
   An industry association founded in 1961 and dedicated to the
   standardisation of information and communication systems.

   ECMA edits standards and technical reports.  All ECMA
   publications are available free of charge.

   The best known ECMA standard is ECMA 262, defining the
   scripting language ECMAScript.

   (2003-06-23)