Tool name: Simple Fuzzer
Tool function: A highly configurable, intuitive, protocol fuzzer
Tool description: Simple Fuzzer is a very simply configured fuzzer which allows the user to construct very generic protocol fuzzers to exercise basic logic. It is a prime example of Charlie Miller's "Fuzzing by shotgun" approach to bug finding.
Simple Fuzzer has been used in both commercial, and non-commercial settings. It has found numerous bugs in varying software products, including D-Link routers, BigAnt IM server, wireless drivers (using a wireless injection plugin), and a gamut of software in-between. It's success is tied to the rapid development of basic tests in an intuitive manner.
Tool Location: http://aconole.brad-x.com/programs/sfuzz.html