The Collaborative International Dictionary of English v.0.48:
AE \[AE]\ or Ae \Ae\
   A diphthong in the Latin language; used also by the Saxon
   writers. It corresponds to the Gr. ai. The Anglo-Saxon short
   [ae] was generally replaced by a, the long [=ae] by e or ee.
   In derivatives from Latin words with ae, it is mostly
   superseded by e. For most words found with this initial
   combination, the reader will therefore search under the
   letter E.
   [1913 Webster]
V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
AE
       Apple Events (Apple)
V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):
AE
       Application Entity / Environment / Execution / Engineering (APE)
The Free On-line Dictionary of Computing (30 December 2018):
Application Executive
AE
    (AE) An embeddable language, written as a C
   interpreter by Brian Bliss at UIUC.  AE is compiled with an
   application and thus exists in the same process and address
   space.  It includes a dbx symbol table scanner to access
   compiled variables and routines, or you can enter them
   manually by providing a type/name declaration and the address.
   When the interpreter is invoked, source code fragments are
   read from the input stream (or a string), parsed, and
   evaluated immediately.  The user can call compiled functions
   in addition to a few built-in intrinsics, declare new data
   types and data objects, etc.  Different input streams can be
   evaluated in parallel on Alliant computers.
   AE has been ported to SunOS (cc or gcc), Alliant FX and
   Cray YMP (soon).
   (ftp://sp2.csrd.uiuc.edu/pub/at.tar.Z).
   (ftp://sp2.csrd.uiuc.edu/pub/bliss/ae.tex.Z).
   (1992-04-21)
The Free On-line Dictionary of Computing (30 December 2018):
ae
    The country code for the United Arab Emirates.
   (1999-01-27)