<p>Holger Krekel is a founder of the PyPy project and has participated in
PyPy core developement for several years as well as maintained much of
its infrastructure. He also is the author of the popular <aclass="reference external"href="http://pytest.org">py.test</a> and
<aclass="reference external"href="http://codespeak.net/tox">tox</a> testing tools as well as <aclass="reference external"href="http://codespeak.net/execnet">execnet</a>, a library for easily deploying
different interacting Python interpreters side by side. He helped
manage multiple PyPy funding contracts through his company merlinux and is a
PyPy representative within the Software Freedom Conservancy (SFC). He
holds a summa cum laude degree in computer science with a thesis about
artificial intelligence applied to the game of Go. As of 2011 he is on
another sabbatical-ish leave, caring for his newborn son, travelling
and pondering what comes next. Other than that he continues to care
for testing and some PyPy co-ordination bits behind the scene.</p>
</div>
<divclass="section"id="many-more-people">
<h1>Many more people</h1>
<p>PyPy is and has always been an effort of many volunteers. Consult the <aclass="reference external"href="https://bitbucket.org/pypy/pypy/src/tip/LICENSE">LICENSE</a>