xgrk-1.6-i686-linux2.2.18 xgrk-1.6-sun4m-solaris6 xgrk-1.6-sun4u-solaris7 xgrk-1.6-sun4u-solaris7-dynamic xgrk-1.6.3-macos10.4.8 (universal binary. intel+ppc) xgrk2-1.6.3-macos10.4.8 (universal binary. intel+ppc)