diff --git a/pmd/xdocs/similar-projects.xml b/pmd/xdocs/similar-projects.xml
index 9cd38cef6f..b861cf7ff5 100644
--- a/pmd/xdocs/similar-projects.xml
+++ b/pmd/xdocs/similar-projects.xml
@@ -34,6 +34,7 @@
          <li><a href="http://www.jenssoft.com/">CodeCompanion</a> - Decent collection of rules, $199.</li>
          <li><a href="http://www.andiz.de/azosystems/en/index.html">AzoJavaChecker</a> - Rules aren't listed online so it's hard to tell what they have.  Not sure how much it costs since I don't know German.</li>
          <li><a href="http://www.alajava.com/aubjex/products.htm">Aubjex</a> - Rules aren't listed online.  Appears to have some code modification stuff, which would be cool to have in PMD.  $299.</li>
+         <li><a href="http://www.excelsior-usa.com/fd.html">Flaw Detector</a> - In beta, does control/data flow analysis to detect NullPointerExceptions</li>
        </ul>
      </subsection>
    </section>