No specific info about version 1.1. Please visit the main page of DrUnarchiver on Mac Informer.
The Unarchiver is an application for Mac to manage your archive files.
ForkLift is a robust and elegant file manager and FTP/SFTP client...
Program that lets you browse the contents of archives, as well as extract them.
Facilitates fixing and unpacking downloaded binary files.
Entropy is a capable archive manager for Mac computers.