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PowerTCP Zip Compression Tool
Add powerful file compression and AES encryption to any Windows or ASP application.
www.dart.com/

Lossless Image Compression with Switched Linear Prediction
By Shinji Wakasugi. A simple method for lossless image compression using switched linear prediction. Report in PDF with code in C.
www3.tokai.or.jp/

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.
www.xceedsoft.com/

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

ACM Crossroads Data Compression Issue
Data Compression issue of ACM Crossroads, the student magazine of the Association for Computing Machinery.
www.acm.org/

Compression via Arithmetic Coding in Java
Unrestricted open-source Java implementation of the PPM (prediction by partial matching) algorithm for text and data compression by Bob Carpenter. Builds with ant.
www.colloquial.com/

Data Compression Reference Center
Basic facts, algorithms, hardware, links, and a glossary.
oldwww.rasip.fer.hr/

Arturo Campos: Compression Programming
Articles on various compression algorithms.
www.arturocampos.com/

Sparse Matrix Compression Schemes
Pseudocode for a spare matrix compression algorithm.
www.angelfire.com/

Groovyweb Compression Tutorials
Compression tutorials, links to other compression sites and compression downloads.
www.groovyweb.uklinux.net/