The ICARUS framework has undergone a number of updates including new functionality for visualization of coreference assignments  as well as automatic error mining on manually annotated treebanks for part-of-speech and dependency syntax . Moreover, several bug fixes and speedups to the dependency tree search and visualization have been made. For more information check the papers below, or the ICARUS page.
 Markus Gärtner, Anders Björkelund, Gregor Thiele, Wolfgang Seeker, and Jonas Kuhn.
Visualization, Search, and Error Analysis for Coreference Annotations. In ACL 2014
 Gregor Thiele, Wolfgang Seeker, Markus Gärtner, Anders Björkelund and Jonas Kuhn. A Graphical Interface for Automatic Error Mining in Corpora. In EACL 2014 (Demonstrations). [ pdf]