This tool is for fuzzing different protocols such as FTP, HTTP, IMAP, and more. It also has no-protocol plugins like a file fuzzer. Written in Python.
You can download it from the following link: https://packetstormsecurity.com/files/download/110712/backfuzz.tar.gz
Source: https://packetstormsecurity.com/files/110712/Back-To-The-FUZZer-Toolkit.html