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Open source command line data stream compressor and archiver.

This ZIP utility supports a huge number of compression formats including 7-ZIP. Also has AES encryption and a skinnable interface.

Small and simple contextual menu based zip program with full ZIP-64 huge-archive compression.

Unzip program for Windows that doesn't prompt before overwriting files. Supports shell links, drag and drop, and command line.

Free archiving utility with Windows integration, script support and ZIP-64 for huge archives. Website provides a free support forum.

Supports a wide variety of achive types, creates self extracting archives, integrates with mail and virus scan, and integrates with Windows Explorer.

An open source Java utility for comparing two zip files. Also suitable for JAR, EAR, WAR and RAR files.

A full-featured ZIP program with SFX and ZIP-64 support. Also supports AES encryption 7-ZIP format and integrated image-viewing.

ZIP program with a skinned interface and full support for over 20 compression formats.