A Protected Mode Debugger which provides debugging services to real mode, protected mode, virtual 8086 mode programs, DPMI and VCPI clients, and Win 3.1x and Win95/98 programs under any memory manager while occupying only a few kilobytes of low DOS memory.

Assembler written complex number math library (single, double and extended precisions), intended as a high-quality replacement for the available C++ complex class libraries, and as an add on for Pascal or Delphi.

Irie Pascal for DOS is a Pascal compiler and interpreter. Both the compiler and interpreter are command-line based.

Libraries for vector, matrix, and complex math functions. Hand optimized routines written in Assembler for speed and accuracy.

A list of interrupts used on the Intel x86 architecture and their meaning with over 9000 linked pages and 350 indexes greatly ease the process of searching.

The Ultimate Packer for eXecutables is a portable, extendable, high-performance executable packer for several different executable formats. Freeware.