The Free On-line Dictionary of Computing (30 December 2018):
Standard ML
    (SML) Originally an attempt by Robin Milner
    ca. 1984 to unify the dialects of
   ML, SML has evolved into a robust general-purpose language.
   Later versions have been maintained by D. B. MacQueen, Lal
   George , and J. H. Reppy
    at AT&T, and A. W. Appel
   .
   SML is functional, with imperative programming features.
   It is environment based and strict.  It adds to ML the
   call-by-pattern of Hope, recursive data types,
   reference types, typed exceptions, and modules.  (The
   "core" language excludes the modules).
   Standard ML is polymorphically typed and its module system
   supports flexible yet secure large-scale programming.
   Standard ML of New Jersey is an optimising native-code
   compiler for Standard ML that is written in Standard ML.  It
   runs on a wide range of architectures. The distribution also
   contains: an extensive library - The Standard ML of New Jersey
   Library, including detailed documentation; Concurrent ML
   (CML); eXene - an elegant interface to X11 (based on
   CML); SourceGroup - a separate compilation and "make"
   facility.
   Implementations: SML/NJ, POPLOG ML, Poly/ML, Edinburgh
   SML, ANU ML, Micro ML, lazy sml2c.
   sml2c compiles to C.  See also ML Kit.
   Version 0.93 runs on 68000, SPARC, MIPS, HPPA,
   RS/6000, Intel 386, Intel 486 and Macintosh.
   Manual
   (http://dcs.napier.ac.uk/course-notes/sml/manual.html).
   FTP from ATT (ftp://research.att.com/dist/ml/).
   FTP from Suny SB (ftp://sbcs.sunysb.edu/).
   Mailing list: sml-request@cs.cmu.edu.
   ["A Proposal for Standard ML", R. Milner, ACM Symp on LISP and
   Functional Prog 1984, pp. 184-197].
   (1995-12-24)