Arcpak
Is a unit for BP 7.0 that allows you to write programs that use archive utilities. Arcpak recognizes arc, pak, zip, lzh, arj, and exe files. It supports DOS and OS/2.
ChiefLZ LZ77 Compression
This package contains Borland Pascal and Delphi sources, for LZSS (LZ77) file compression and decompression. This works with single files, and archives. The sources compile for Dos, Dos DPMI, Win16, and Win32.
DeZip v1.5
The DeZip program included in this package is a Turbo Pascal (v5.0) implementation of a decompressor for ZIP format archives created with PKWare's PKZIP program. With source in Pascal.
LZSSUNIT V1.02 for Borland (Turbo)
Pascal. Public Domain, TPH included, fast LZSS decompression implemented in Borland BASM, extremely easy to use and all three DOS, DPMI, Windoze platforms supported. Full source code and demo provided. &joy!
LZW Data Compression Library for Pascal ver 1.4
DSCR: LZW4P is a data compression library for Turbo Pascal programmers which uses the LZW algorithm as published in research papers by Lempel, Ziv, and Welch. The LZW algorithm is probably the best generic compression algorithm known today.
UnZip Version 2.0, Zipfile Extract Utility
It is written to be as small and portable as possible -- ideal as a starting point for handling .ZIP files in non-IBM environments. Source code is provided in C and Turbo Pascal. If you port this program to a non-IBM system, I would appreciate a copy of the ported source and exec files.