<li>The most up-to-date <aclass="reference external"href="http://buildbot.pypy.org/nightly/trunk/">nightly binary builds</a> with a JIT, if the official
release is too old for what you want to do. There are versions for
different libc on this site too.</li>
<li>Reverse debugger (RevDB): This version enables debugging your Python
programs by going forward and backward in time. See the <aclass="reference external"href="https://bitbucket.org/pypy/revdb/">separate
documentation</a>.</li>
</ul>
<ulclass="simple">
<li>Sandboxing: A special safe version. Read the docs about <aclass="reference external"href="features.html#sandboxing">sandboxing</a>.
(It is also possible to <aclass="reference internal"href="#translate">translate</a> a version that includes both
sandboxing and the JIT compiler, although as the JIT is relatively