Powerful, easy-to-use, high performance ActiveX data compression component that (1) Enables quick and efficient zip and unzip with just a few lines of code(2) Supports multithreading, modern compression algorithms (BZip2, LZMA, PPMd), multipart archives, large files over 4 GB, WinZip AES, self-extract and Unicode filenames/comments (3) Creates files that are compatible with WinZip, PKZIP and 7-Zip (4) Works with C#, VB.NET, VB6, Delphi & more.