Xceed Zip Compression Library
- A software component that provides functions for compressing and uncompressing files and data. Its most popular functionality is the ability to create, read and write Zip files.
- http://xceed.com/Zip_ActiveX_Intro.html

ActiveXZip
- A ZIP compression component. By HDSE Software.
- http://www.hdse.org/activexzip/index.htm

csASPZipFile
- An ASP component to create zip files and control file downloads. [Comonent, Commercial]
- http://www.chestysoft.com/zipfile/

SA-Archive
- Supports management of archives files (ZIP, CAB) including creation, extraction, enumeration and signing with Authenticode. Requires runtime licensing. By SoftArtisans, Inc. [Component, Commercial]
- http://fileup.softartisans.com/default.aspx?PageID=124

Chilkat Zip
- Provides in-memory and file Zip compression. By Chilkat Software, Inc. [Control, Shareware]
- http://chilkatsoft.com/ChilkatZip.asp

Polar ZIP
- Data compression component that supports multiple compression levels, and repairing corrupted ZIP files. By Polar. [Component, Commercial]
- http://www.polarsoftware.com/products/zip/index.html

UPL Compression
- A compression ActiveX control. It has Dynamic Huffman, Arithmetic, BWT, Ppm and several Lampel Ziv flavors.
- http://www.uplib.com/

Inner Media
- Maker of DynaZIP and Active Delivery zip and unzip data compression component libraries. Active Server Page (ASP) compatible, with ActiveX, DLL, VCL, OCX, VBX and other interfaces.
- http://www.innermedia.com/

Data Compression ActiveX and DLL Components
- Makers of DynaZIP and Active Delivery Zip Data Compression and Self-Extract ActiveX, DLL, VCL, VBX Component Library with ASP support, all royalty free.
- http://www.imiwebs.com/

Abale Zip
- Supports multithreaded Zip compression. By Abale.com. [Component, Commercial]
- http://www.abale.com/

Sax Zip Objects
- Supports ZIP data compression. By Sax Software Corp. [Component / Control, Commercial]
- http://www.sax.net/activex/compression/