fcrackzip is a great AmigaOS4 app written by Marc Lehmann. Zipping a bunch of files or a big file is a very common practice. Sometimes if the zipped content is private or needs to be secured then a password can be applied to the zipped file so that only the user who knows the password can unzip it. But troubles may arise when you forget the zip file password. Fcrackzip is a software program which facilitates you to recover your Zip file password. Fcrackzip searches each zipfile given for encrypted files and tries to guess the password. All files must be encrypted with the same password, the more files you provide the better.