The 4th International OMNeT++ Workshop will be held on March 21, 2011 in Barcelona, Spain. You can submit full papers (up to 8 pages), short papers (up to 4 pages) and code contribution papers ^NEW! (2 pages) until November 15, 2010. Participate, show your work, meet others who work with OMNeT++, and exchange ideas! All accepted full and short papers will be indexed, and selected papers will be considered for an international journal publication. The workshop will be held in conjunction with SIMUTools 2011. Read the full Call for Papers!