Download of FileRoller 3.1 for Mac was on the developer's website when we last checked. We cannot confirm if there is a free download of this app available. The software lies within System Tools, more precisely File Compression. Please check the Mac app with an antivirus before launch as it is downloaded from the developer's website, and we cannot ensure that it is safe.
From the developer:
FileRoller is a port to the Mac OS of the archive manager for the GNOME desktop environment.
You may want to check out more Mac applications, such as PeaZip for macOS, which might be similar to FileRoller.