>
<li><p><a class="reference external" href="https://www.python.org/">Python</a> with pip and virtualenv</p></li>
<li><p><a class="reference external" href="http://www.stack.nl/~dimitri/doxygen/">Doxygen</a></p></li>
<li><p><a class="reference external" href="http://lesscss.org/">Less</a> with <code class="docutils literal notranslate"><span class="pre">less-plugin-clean-css</span></code>.
Ubuntu doesn’t package the <code class="docutils literal notranslate"><span class="pre">clean-css</span></code> plugi