LesTec Pty Ltd
   Modular And Integrated Design (MAID) for Windows and OS/2 (visual Rexx GUI) and input/output function library.
   http://www.lestec.com.au/

Rexx/CURL
   Interface to the cURL package for access to URL-addressable resources such as web pages, ftp sites, and telnet sessions.
   http://rexxcurl.sourceforge.net/

Rexx/Curses
   Interface to Curses, a Text-mode user interface.
   http://rexxcurses.sourceforge.net/

Rexx/ISAM
   Interface to ISAM files.
   http://rexxisam.sourceforge.net/

Rexx/SQL
   Interfaces to many SQL Databases.
   http://rexxsql.sourceforge.net/

Rexx/Tk
   A library for using the Tk GUI toolkit.
   http://rexxtk.sourceforge.net/

Rexx/Trans
   Rexx API translation library
   http://rexxtrans.sourceforge.net/

Rexx/Wrapper
   Build executable program from Rexx programs.
   http://rexxwrapper.sourceforge.net/

Rexx/gd
   Interface to manipulate simple graphics images.
   http://rexxgd.sourceforge.net/

dbfREXX
   Database functions for dBASE, Foxpro, Clipper.
   http://www.dsoftusa.com/dbfrexx.htm

rxJava
   Rexx functions for Java.
   http://rpm.pbone.net/index.php3/stat/4/idpl/56083/