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<TITLE>SWI-Prolog 5.11.18 Reference Manual: Section E.2</TITLE><LINK REL=home HREF="index.html">
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<H2><A NAME="sec:E.2"><SPAN class="sec-nr">E.2</SPAN> <SPAN class="sec-title">Contributing 
to the SWI-Prolog project</SPAN></A></H2>

<A NAME="sec:contrib"></A>

<P>To achieve maximal coherence using SWI-Prolog for Free and Non-Free 
software we advice the use of the LGPL for contributed foreign code and 
the use of the GPL with SWI-Prolog exception for Prolog code for 
contributed modules.

<P>As a rule of thumb it is advised to use the above licenses whenever 
possible and only use a strict GPL compliant license only if the module 
contains other code under strict GPL compliant licenses.

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