I didn't know about fuzzers before this whole imbroglio
-- not denoted as such, at least.
If you know `crashme` you already know one fuzzer, which "intended to test the robustness of Unix and Unix-like operating systems by executing random machine instructions." See https://en.wikipedia.org/wiki/Fuzz_testing
As a good app-sec'er you seem to need to be deeply steeped in fuzzer lore. Matasano: "We'll have you write a fuzzer. Everyone here writes fuzzers." http://www.matasano.com/careers/
(I'm obviously not replying to tptacek, just highlighting a bit. ... And basking in the good glow, yes.)