BeOS port of BREXX.

Free interpreter for Unix, MSDOS, WinCE and Amiga. By Vassilis N. Vlachoudis.

Language and development environment.

Product description, including downloads and free runtime.

Dialect used in KEDIT (XEDIT-like editor). Summary by Rex Swain.

PC DOS 2000?s REXX Programming Language

Classic Rexx language interpreter for Windows, from Kilowatt Software.

Writing portable Rexx execs. By Dave Alcock.

Open source Rexx interpreter for Linux/Unix.

Product page, including support information and samples.

UNIX implementation from Benaroya. Graphical debugger available.

Scientific Applications on Linux - REXX entry

Dialect used in NEON System's Shadow OS/390 Web Server. Described in "Programming Guide". [PDF]

An ANSI standard implementation for UNIX systems. Free sample code library.