added three recent frontends

sane-frontends.html

@@ -216,6 +216,7 @@
 	    Here you can find some
 	    <a href="twain-to-sane-bridge.txt">information about it</a>.
 	  </li>
+          <li><a href="http://code.google.com/p/sanedotnet">sanedotnet</a> - C#/Mono bindings</li>
 	</ul>
       </li>
       <li>
@@ -288,6 +289,9 @@ Link is dead
 	    <a href="http://www.gnome.sk/Twain/jtp.html">Morena</a> Image
 	    Acquisition Framework for Java Platform.
 	  </li>
+          <li>
+          <a href="http://code.google.com/p/jfreesane/">jfreesane</a> A pure-Java implementation of a SANE client.
+          </li>
 	</ul>
       </li>
     </ul>
@@ -299,6 +303,7 @@ Link is dead
 	<a href="man/saned.1.html">saned</a> - SANE network daemon for remote scanning (included in sane-backends)
 	(<a href="http://penguin-breeder.org/sane/saned/">more information and documentation</a>)
       </li>
+      <li><a href="http://sourceforge.net/projects/scanbd">scanbd</a> - Daemon for monitoring scanner buttons and sensors, and running specific programs in response.
     </ul>
 
     <hr>