GNAT GPL 2007 Edition for QNX 6.3 is now available at http://www.ajam.org.pl/
Includes all the core features of the Ada 2005 language revision.
gnat --version
GNAT GPL 2007 (20070402-41)
gcc --version
gcc (GCC) 4.1.3 20070506 (prerelease)
gfortran --version
GNU Fortran (GCC) 4.1.3 20070506 (prerelease)
obj --version
GNU Objective-C version 4.1.3 20070506 (prerelease) (i386-pc-nto-qnx6.3.0)
compiled by GNU C version 4.1.3 20070506 (prerelease).
And gprolog 1.3.1 - gprolog sources with change for QNX