BigSpeed Zipper
   Compact ZIP tool with unusual features such as browsing ZIP files before downloading and full-text search of ZIP file contents.
   http://www.bigspeed.net/index.php?page=bszipper

Bzip2 and Libbzip2
   Patent free, high-quality data compressor for Windows or Unix.
   http://www.bzip.org/

Cabextract
   Portable UNIX decompressor for the Microsoft Cabinet (.CAB) format.
   http://www.kyz.uklinux.net/cabextract.php

Cathonian Ventures Ltd - Zipfusion
   Flexible self-extractor, use with any zip tools that create type 0 (stored) and type 8 (deflate) format zip files. Feature a built-in configuration editor.
   http://www.skaro.net/zipfusion/

Dzip
   Compact Windows compression program that creates small .DZ archive files. Integrates with Windows Explorer.
   http://speeddemosarchive.com/dzip/

EnZip
   Windows Explorer-integrated Zip program which can also build self-extracting archives with customized interfaces.
   http://website.lineone.net/~chris_m/

FileCompress Uharc Gui
   A free Uharc 0.4 Gui with SFX and other features like preview of .uha file.
   http://filecompress.altervista.org/

Free WinZIP Alternatives
   A roundup and review of fully WinZIP-compatible freeware ZIP programs -- compared on the basis of usability.
   http://free-backup.info/free-winzip.html

FreeZip
   Windows zip utility that prides itself on being small, fast and efficient.
   http://members.ozemail.com.au/~nulifetv/freezip/

Gzip
   Open source command line data stream compressor and archiver.
   http://www.gzip.org/

ICEOWS
   Windows compression utility using the ARJ format (was called ArjFolder). Can extract, test, and view files stored in ZIP, GZIP, TAR, CAB, RAR, ACE, PK3, etc. and create SFX executables.
   http://www.iceows.com/HomePageUS.html

JustZIPit
   Small and simple contextual menu based zip program with full ZIP-64 huge-archive compression.
   http://free-backup.info/justzipit.html

MultiZipper
   Unzip program for Windows that doesn't prompt before overwriting files. Supports shell links, drag and drop, and command line.
   http://www.multizipper.com/

Quick Zip
   Free zip compression utility for Windows, create, extract, and testing for zip archives.
   http://www.quickzip.org/

StuffIt Expander
   Decompresses all files in any of the StuffIt formats. It will also decode single and multi-part BinHex files. [Win/Solaris/Linux/Mac]
   http://www.stuffit.com/expander

Tugzip
   Free archiving utility with Windows integration, script support and ZIP-64 for huge archives. Website provides a free support forum.
   http://www.tugzip.com/

UltimateZip
   Supports a wide variety of archive types, creates self extracting archives, integrates with mail and virus scan, and integrates with Windows Explorer.
   http://www.ultimatezip.com/

WinBZip2
   A small GUI utility for working with files in bzip2 format, compressing, decompressing and testing the integrity of bzip2 files.
   http://www.irnis.net/soft/winbzip2/

WinGZip
   A small GUI utility for working with files in gzip format. It allows to compress any file into gzip format, decompress and test the integrity of already gzipped files.
   http://www.irnis.net/soft/wingzip/

WinImp
   Extracts ZIP, ARJ, RAR, TAR as well as higher-compression IMP format. Includes drag-and-drop capability and creation of custom SFX files which can launch a file after unpacking.
   http://www.technelysium.com.au/winimp.html

XStandard Zip Component
   ZIP or unzip a file or folder using a single line of code with this free component. [ActiveX DLL]
   http://www.xstandard.com/page.asp?p=C9891D8A-5390-44ED-BC60-2267ED6763A7

ZIPGenius
   A full-featured ZIP program with SFX and ZIP-64 support. Also supports AES encryption 7-ZIP format and integrated image-viewing.
   http://www.zipgenius.it/

Zip 2 Secure EXE
   Utility to convert any ZIP file into a self-extracting executable. Supports AES encryption, can unpack automatically to a temporary directory and run a setup.exe after extraction.
   http://www.chilkatsoft.com/ChilkatSfx.asp

ZipFree 2000
   ZIP tool with integrated virus check and integrated emailing for quick ZIP and send. Supports SFX creation and pre-extraction viewing.
   http://www.pepsoft.com/zipfree/intro.html

ZipItFast
   ZIP program with a skinned interface and full support for over 20 compression formats.
   http://zipitfast.com/

Zipfocus
   A small zip file reader for general use or restoring backups from floppy/flash/cd drive.
   http://www.skaro.net/zip-reader/

zipdiff
   An open source Java utility for comparing two zip files. Also suitable for JAR, EAR, WAR and RAR files.
   http://zipdiff.sourceforge.net/