Oberon System V4 (Johannes Kepler University Linz) A complete IDE including compiler, debugger, class browser, development libraries, network programming (TCP/IP, WWW, a complete web browser), and database connectivity.

Small Oberon-2 compiler for Linux.

Oberon-to-C translator; free downloads that can be used to create demo programs that identify themselves as such when started from Unix shells. [commercial]

An Oberon compiler for the Atari St. (FTP Dir)

A compiler for the Oberon language for the Macintosh Programmer's Workshop (Version 3.0 or later).

Documentation for the Oberon-2 compiler available at Oxford.