Debian GNU/Linux - regina-rexx
Interpreter package and curses interface.
Dennis Bareis's Freeware Site
Selected Regina versions for download, information on bugs and conversion issues.
Patrick TJ McPhee
Function packages for Regina. w32funcs, RegUtil, FileUT, amath.
Regina Cross-Platform Rexx Interpreter
Open source, ported to most Unix and desktop platforms. Maintained by Mark Hessling.
Windows NT Resource Kit
Outdated Regina interpreter included.