7Zip is an open source archiving utility currently supporting only Windows platform. It fully supports 7z, ZIP, GZIP, BZIP2 and TAR formats. Developed by Igor Pavlov
License: Open Source
7-Zip is a versatile file archiver that supports multiple formats and offers high compression ratios with strong encryption, making it ideal for a wide range of applications. In contrast, gzip is a simpler tool focused on efficient single-file compression, particularly in Unix/Linux environments, but it lacks advanced features like encryption and multi-format support.