The Mjølner System: Public Domain
This page contains information on Public Domain software etc.,
related to the BETA language.
The BETA Language Definition
The BETA language definition is in the public domain. A formal language definition does not exist, but all parts of the language are described in
Ole Lehrmann Madsen, Birger Møller-Pedersen, Kristen Nygaard:
The book can be downloaded free of charge in PDF format from
"Object-Oriented Programming in the BETA Programming Language"
Addison-Wesley and ACM Press, 1993
Free Download of The Mjølner System
The Mjølner System is available for free download from
It is not in the Public Domain, but is restricted by the
Mjølner System Licence Aggreement.
Public Domain Compilers
Erik Ernst has created the language gbeta and a compiler for it.
gbeta is a generalization of the programming language BETA. You can
download a compiler/interpreter for gbeta, and the source code of this
implementation is freely available under the GPL license.
More at http://www.cs.au.dk/~eernst/gbeta/.
Kai Petzke has earlier
initiated a project for writing a freeware compiler for
BETA. It was implemented as a translator of BETA to C. For more
information and to download a working copy of the compiler, that
understands most of BETA's grammatical terms, see the web page:
http://troubadix.physik.tu-berlin.de/~petz0433/beta/eindex.html (no longer present).
BetaGUI is a small Windows 95 and Windows NT application, that
combines an easy-to-use editor screen as well as a powerful
controlling mechanism for the Mjølner System itself. Now
you somehow feel like coding BETA in a Delphi environment.
BetaGUI offers the following to its user:
Download your version of BetaGUI http://www.elitedev.com/products/BetaGUI/index.html (no longer present).
- all in one editor and errormessages window
- ability for unlimited number of sources open
- project file support
- configurable for use with different SDKs and env-variable handling
- multi-user support
- and many more.
Send bugreports and suggestion for improvements to one of the following
e-mail addresses: Jens Georg or Marc
BetaGUI for the Mjølner System is created using
(c) 1997 Jens Georg & Marc Hoffmann, elite!developments.