  |
DotNetZip - http://www.codeplex.com/DotNetZip/
A small, easy-to-use open source Ms-PL .NET library for manipulating zip files. Supports Compact Frameworks. Features a forum, an issue tracker and detailed download statistics. |
  |
SharpZipLib - http://www.icsharpcode.net/OpenSource/SharpZipLib
A Zip, GZip, Tar and BZip2 GPL open source library written entirely in C# for the .NET platform. It has a forum and a project wiki. |
  |
SevenZipSharp - http://sevenzipsharp.codeplex.com/
A managed native 7zip library open source LGPL wrapper written in C# which provides data (self-)extraction and compression in all 7-zip formats. Features a forum, an issue tracker and detailed download statistics. |
  |
Xceed Zip for .NET - http://xceed.com/ZipRT_Net_Intro.html
Create and manipulate industry standard zip files and perform other data compression tasks. Proprietary license. |
  |
Chilkat ZIP.NET - http://www.chilkatsoft.com/dotNetZip.asp
Implements standard Zip compression tasks. Zip and UnZip files and directories, or directly from application memory. Proprietary license. |