The best compression/extraction utility on the platform.

By far the most delightful compression/extraction utility for macOS (imo) is somewhat diminished in delightfulness in its mobile form, though not in its pure functionality. From the perspective of a year one iOS user with plenty of experience exploring what alternatives have been offered since the introduction of the File Provider API in iOS11, Keka for iOS/iPadOS' shear speed is distinct enough from its few platform competitors to warrant the title of Best such utility on the platform.

Also unique/notable:

• Open Source
• Unique support for compression of entire directories outside the app’s respective system folder(s)