Welcome to the Rexx Language History page.
Rexx Language History
This page collects documents and links relating to the history of the
Rexx, Object Rexx, and NetRexx programming languages,
gleaned from many sources.
For the latest news, tutorials, links, and other information about
the languages and the
standard, please visit the Rexx
Language Association web site.
Rexx was initially developed from 1979 through 1982 as an internal
IBM tool, and was first released as part of the IBM VM/SP3 operating
system product in 1983. Since then there have been numerous
Rexx implementations, for all major
platforms. It has been estimated that, to date, well over two million
people have written programs in Rexx, Object Rexx, or NetRexx.
Here you'll find:
Early History of REXX, Cowlishaw, M. F., IEEE Annals of the
History of Computing, ISSN 1058-6180, Vol 16, No. 4,
Winter 1994, pp15-24.)
For current information on Rexx, and more background, try these
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This information is collected and maintained by
Please send your requests and suggestions for additional items (and
report any errors or omissions) using e-mail to
My thanks to Ian Collier, Eric Giguere, Gabe Goldberg,
and Melinda Varian for permission to use their documents and data in
this collection, and to Liz Holland for finding many of the historical
announcement documents. I am also indebted to IBM for the
opportunity to develop Rexx in the first place, and for the permission
to reproduce the extracts from IBM documentation here.
Copyright © Mike Cowlishaw 1973, 2020, except where stated
otherwise. Parts Copyright IBM 1974, 2003; used by permission.
All rights reserved.
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