File Management/Compression
open source
PeaZip
PeaZip is a free, open source, cross platform, portable archiving and compression utility, with encryption and volume split features. It has full for support: 7Z, 7Z-sfx, ARC/WRC, BZ2/TBZ2, GZ/TGZ, PAQ/LPAQ, PEA, QUAD/BALZ, split, TAR, UPX, ZIP. You can open, browse, extract, test: ACE, ARJ, CAB, CHM, COMPOUND (MSI, DOC, XLS, PPT), CPIO, ISO, Java (JAR, EAR, WAR), Linux (DEB, PET/PUP, RPM, SLP), LHA/LZH, NSIS, OOo, PAK/PK3/PK4, RAR, WIM, XPI, Z/TZ. Other features include split/join files, wipe files...
adware
ALZip
ALZip is a powerful and user-friendly compression and archiving utility. It opens 35 file formats. ISO and BIN CD image formats can be opened as well as LCD virtual CD image files. Self-extracting files (SFX) can also be created with 1 of 4 cute icons, so anyone can open them without a ZIP utility. The password recovery tools lets you get back lost passwords for ZIP files. Powerful sorting lets you organize and manage large archives. Anti-virus integration and unknown file association defaults let you...
freeware
ExtractNow
ExtractNow lets you extract multiple files with ease. Extract more than one archived file at a time, with a click of a button. To extract files, simply drag and drop them into the main program window, or right-click the files while in Windows Explorer. Makes extracting files easier and quicker. Supports ZIP, RAR, ISO, BIN, IMG, IMA, IMZ, 7Z, ACE, JAR, GZ, LZH, LHA and SIT archive formats.
freeware
Universal Extractor
Universal Extractor is a program do to exactly what it says: extract files from any type of archive, whether it's a simple zip file, an installation program, or even a Windows Installer (.msi) package.
freeware
IZArc
IZArc is a free archiving tool that suports many archive formats. It allows you to drag and drop files from and to Windows Explorer, create multiple archives spanning disks, view and write comments. There is an integrated password detector that allows you to find the passwords of one password protected zip file. It has built-in multilanguage support.
freeware
Alpx
Alpx is a UPX Packer GUi for compressing or decompressing with UPX. Includes shell integration and it support 2 languages. Supports all existing UPX-Packers.
freeware
ZipGenius
ZipGenius has all the main features of compression programs (zip, unzip and so on), but it's different from the others because it offers very special features. You can give better protection to your archives using encryption instead of the standard zip password, you can send e-mail using the built-in mail client or you can publish archives on the Web with FTPGenius, the built-in FTP client.
freeware
Pismo File Mount Audit Package
Pismo File Mount Audit Package is a Windows system extension that enables access to contents of ZIP, ISO, and Private Folder files by any application. Supported file formats can be mounted as folders in the file system. The companion Pismo File Mount Developer Kit allows software developers to add support for new file formats and virtual file systems.
open source
FreeArc
FreeArc is a modern general-purpose archiver. Main advantage is fast but efficient compression and rich set of features. It works 1.5 times faster than best programs in each compression class.
open source
7-Zip
7-Zip is a file archiver with the high compression ratio. The program supports 7z, ZIP, CAB, RAR, ARJ, LZH, CHM, GZIP, BZIP2, Z, TAR, CPIO, RPM and DEB formats. Compression ratio in the new 7z format is 30-50% better than ratio in ZIP format.