ARexx

ARexx is a Rexx interpreter for Amiga, written in 1987 by William S. Hawes, with a number of Amiga-specific features beyond standard Rexx. An ARexx script can communicate with software that implements an ARexx port. An Amiga application can define a set of commands and functions for ARexx to address, thus making the capabilities of the software available to an ARexx script. Several applications support running an ARexx script as a macro.

An ARexx script can execute commands and functions in multiple applications which allows a script to integrate the functionality of the applications. For example, an ARexx script could extract data from a database, insert the data into a spreadsheet to perform calculations on the data, then insert tables and charts based on the results into a word processor document.