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Clean License Conditions
Clean is available under a dual license:
1 The LGPL the standard GNU Lesser General Open Source license (see below),
which is free, but
available for non-commercial purposes only.
2 A commercial license (see below) that must be purchased. Information on that
license can be obtained
from Prof.dr.ir. M.J. Plasmeijer, preferably via email: rinus@cs.kun.nl.
Note, that development under the LGPL license entails some restrictions and
responsibilities. More
information on the nature of the LGPL is available at www.gnu.org and
www.opensource.org.
Users can choose which they wish to operate under. However, for commercial
applications the
LGPL license is not available. Instead, developers wishing to distribute
commercial applications
(either publicly or privately) must purchase a commercial license.
Commercial purposes are those involving money (excluding the costs for
distributing and copying):
for example:
- selling software that uses directly or indirectly the source code of the Clean
system or
portions thereof;
- selling services based on software that uses directly or indirectly the source
code of the
Clean system, or portions thereof;
- using software that uses directly or indirectly the source code of the Clean
system, or
portions thereof, to examine, manage, measure or report the performance of a
business.
Warning
Developers who distribute commercial applications, either publicly or privately,
that are written using
the Clean system, who do not have a commercial license are in breach of these
license conditions
and of US and International copyright law. The penalties for such breaches are
quite severe, and
offenders will be prosecuted.
Note
For a few parts of the Clean system the sources are not available yet. In
particular, this concerns the
alpha release of Sparkle. It is the intention that for
these parts the sources
will be available soon under these license conditions. For the time being, these
parts of the Clean
system are available under the old Clean license conditions (see below) only.
December 21, 2001.
OLD Clean License Conditions
============================
The Concurrent Clean Compiler and the Concurrent Clean Program
Development System are developed by the Research Group on Functional
Programming Languages at the University of Nijmegen (copyright
University of Nijmegen, Hilt High Level Software Tools B.V. , 1987-2000).
The Clean Software can be used free of charge only if it is used for
non-profit purposes in a non-commercial environment, i.e. for
educational or research purposes in a non-profit institute or for
personal, non-commercial use. For this kind of use it is allowed to
copy the software under the condition that the complete distribution
(see the Clean Distribution page) for a certain platform is copied,
including this license condition, copyright notice, language manual,
help file, the compiler, the code generator and the development system.
Under the same conditions it is allowed to re-distribute the system. We
appreciate it very much if you would inform us when you copy or
redistribute the system.
For ANY use of Clean with a commercial purpose or in a commercial
environment a commercial license is needed.
For a commercial license one has to contact Rinus Plasmeijer either via
the registration form
http://www.cs.kun.nl/~clean/Clean.Registration.html
or via e-mail
mailto:rinus@cs.kun.nl
or
Department of Computer Science
University of Nijmegen
Toernooiveld 1
6525 ED Nijmegen
tel: +31 80 652644
fax: +31 80 652525.
The Clean Software is distributed via ftp:
ftp://ftp.cs.kun.nl/pub/Clean
More information about Clean is also available on the World Wide Web:
http://www.cs.kun.nl/~clean
Versions of Concurrent Clean are available for several platforms.
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