rea, it
  has not been kept up-to-date for use with modern compilers or C++
  standard library implementations.</p></li><li class="listitem"><p><a class="link" href="http://www.stlport.org/" target="_top">STLport</a>: STLport is a free
  implementation of the C++ standard library derived from the <a class="link" href="https://web.archive.org/web/20171225062613/http://www.sgi.com/tech/stl/" target="_top">SGI implementation</a>, and
  ported to many other platforms. It includes a debug mode that uses a
  wrap