Screen shot : YAAC ( yet another APRS client )

I installed YAAC last night: http://www.findtheater.com/ka2ddo/YAAC.html

Program is written in Java and has a setup wizard.  Doesn't take long to set up and you're monitoring the APRS network via the APRS-IS server system. YACC uses OSM maps by default and you can add TNCs and radios when you're ready to.