SharpZipLib is a free, open-source compression library for .NET. It supports Zip, Gzip, Tar, and Bzip2, and also computes checksums. The library currently lacks Zip file splitting/spanning, customizable self-extracting Zip files, and reading and writing directly to memory. It is ported from the GNU Classpath Zip library for Java. The library and source code is distributed under the GNU General Public License, with an exception.
Affiliate Creator
Affiliate Creator is a shareware utility that helps shareware authors and their affiliates to create custom builds easily.
SharpZipLib
SharpZipLib is a free, open-source compression library for .NET. It supports Zip, Gzip, Tar, and Bzip2. Also computes checksums. Currently lacks Zip file splitting/spanning, custom self-extracting Zip files, and reading/writing to memory.
Chilkat Zip
Chilkat Zip is an easy to use, high-performance ActiveX control that provides your applications with the ability to create and manipulate Zip archives.
AidAim ZipForge - Free!
Fast ZIP compression library-Delphi/C++ Builder. Special transaction system optimizes the speed and allows canceling all modifications at any time. Native VCL, no DLL/OCX. Group operations with files. Creates self-extracting archives. Lots of demos.
PowerArc
High efficient Data Compression Library for Delphi