libtap is a C implementation of the Test Anything Protocol, which allows for heterogeneous test suites in several languages.
strace is a useful diagnostic, instructional, and debugging tool. System administrators, diagnosticians, and troubleshooters will find it invaluable for solving problems with programs for which the source is not readily available.
A fast and small image viewer that can synchronize multiple instances.
A program that displays MQ reason code information from the MQ manual