RxSock and RxDial, including C source code. By Darren Abbott.

Database functions for dBASE, Foxpro, Clipper.

Modular And Integrated Design (MAID) for Windows and OS/2 (visual Rexx GUI) and input/output function library.

Offers free ObjectCUR cross-platform utility library, including CUR for classic Rexx.

Interface to the cURL package for access to URL-addressable resources such as web pages, ftp sites, and telnet sessions.

Interface to Curses, a Text-mode user interface.

Interface to manipulate simple graphics images.

Interface to ISAM files.

Interfaces to many SQL Databases.

A library for using the Tk GUI toolkit.

Rexx API translation library

Build executable program from Rexx programs.

Rexx Server Pages compiler for rapid prototyping of XML tags in Rexx. Requires Apache and Mod_Rexx. [Open surce, Common Public License]

Rexx functions for Java.