Pretty good "ISSUE TRACKIING SYSTEM", but it locks some basic features. No "Search and Add" feature, no search plugin, no search and add plugin, no field name editor, no personal fields, no language translations, the style does not match the theme selected, a little bit slow, no open and close listings, etc. I do like it anyway, but I think it is not totally complete. It is a good tool for starters but The one that I really like, and I would love to see something better available for wordpress, is called PERSONAL CALL CENTER PRO, and it is located on the web.
I haven't find anything better yet. but I am hopping this plugin grows enough to match the one that I mention. Keep up the good work folks! You are in the right road. Congratulations.