 <p>Just naming:</p> <ul> <li><a href="http://projects.gnome.org/ORBit2/" rel="nofollow">orbit2</a> <sup>1</sup>, also pyorbit etc.</li> <li><a href="http://omniorb.sourceforge.net" rel="nofollow">omniORB</a></li> <li><p><a href="http://www.theaceorb.com" rel="nofollow">TAO</a> (<em>has already been mentioned</em>)</p> <p><sup>1</sup> On my Ubuntu box, <code>apt-rdepends -r liborbit2</code> returns 5530 lines...</p></li> </ul>