GCT

A test-coverage tool by Brian Marick <marick@testing.com>, based on GNU C. Version 1.4 was ported to Sun-3, Sun-4, RS/6000, 68000, 88000, HP-PA, IBM 3090, Ultrix, Convex, SCO but not Linux, Solaris, or Microsoft Windows.

Commercial support is available from the author (+1 217 351 7228).