A spam filter written with the Rebol/SDK that works as a pop proxy, and also includes web mail interfaces to Hotmail, and Yahoo mail.  Windows only.

Several games and tools based on REBOL/View including "Serve-It!", a full featured, fast HTTP and PROXY-Server.

This tool allows you to combine multiple source or data files into a single REBOL output file.

REBOL port of Box World, a puzzle-solving game similar to Sokoban.

A REBOL interface to Amazon’s Web Services

REBOL/View script to select and sort images and create slideshows.

engine for creating 4X turn-based galactic strategy games