often run <aclass="reference external"href="http://speed.pypy.org/">faster</a> on PyPy. <aclass="reference external"href="http://en.wikipedia.org/wiki/Just-in-time_compilation">(What is a JIT compiler?)</a></li>
<li><strong>Memory usage:</strong> large, memory-hungry Python programs might end up
taking <aclass="reference external"href="http://morepypy.blogspot.com/2009/10/gc-improvements.html">less space</a> than they do in CPython.</li>
<li><strong>Compatibility:</strong> PyPy is <aclass="reference external"href="compat.html">highly compatible</a> with existing python code.
It supports <aclass="reference external"href="http://docs.python.org/release/2.7.1/library/ctypes.html">ctypes</a> and can run popular python libraries like <aclass="reference external"href="http://twistedmatrix.com/">twisted</a>
and <aclass="reference external"href="http://www.djangoproject.com/">django</a>.</li>
<li><strong>Sandboxing:</strong> PyPy provides the ability to <aclass="reference external"href="features.html#sandboxing">run untrusted code</a> in a
fully secure way.</li>
<li><strong>Stackless:</strong> PyPy can be configured to run in <aclass="reference external"href="http://www.stackless.com/">stackless</a> mode,
providing micro-threads for massive concurrency.</li>
...
...
@@ -58,10 +61,7 @@
<li><strong>Sandboxing:</strong> PyPy provides the ability to <aclass="reference external"href="features.html#sandboxing">run untrusted code</a> in a
fully secure way.</li>
<li><strong>Stackless:</strong> PyPy can be configured to run in <aclass="reference external"href="http://www.stackless.com/">stackless</a> mode,
providing micro-threads for massive concurrency.</li>
<li><strong>Compatibility:</strong> PyPy is <aclass="reference external"href="compat.html">highly compatible</a> with existing python code.
It supports <aclass="reference external"href="http://docs.python.org/release/2.7.1/library/ctypes.html">ctypes</a> and can run popular python libraries like <aclass="reference external"href="http://twistedmatrix.com/">twisted</a>
and <aclass="reference external"href="http://www.djangoproject.com/">django</a>.</li>
<li>As well as other <aclass="reference external"href="features.html">features</a>.</li>