Figurine is an X11 editor for xfig FIG3.2-format vector graphics. It is simpler to use than xfig while providing a mostly similar feature set. Figurine can output in any format supported by the fig2dev utility (provided with the external package transfig).
OProfile is a low-overhead, transparent profiler for Linux. It is capable of instruction-grain profiling of all processes, shared libraries, the kernel, and device drivers, via the hardware performance counters.