I have found the original "design" I made 30+ years ago :-)
Painting tool - Borland Pascal - MS-DOS - 1990
Written with a friend of mine, I have found the binaries of first version of this program. We added many features later, including mouse and printer (Epson) support.
IDE/Assembler - Borland Pascal / Turbo Vision - MS-DOS - 1992/1993.
I wrote this assembler for Zilog 80 for carrying out my final project for my graduation in electronics.
Demo - Borland C++ / Borland Assembler 386 - MS-DOS - 1995/1996
First time I watched ID-Software's games I was so impressed that I decided to implement my own graphics engine. BTW I made a bet with a friend of mine that I was able to :-)
Binary Editor / Disassembler x86 - Borland Pascal - MS-DOS - 1991-1998
Binary editors are essential. This one among other features includes a x86 disassembler. I don't have to say the reason why. I guess !
Network Analyser - Visual C++ - Windows - 2001
This tool allows examination of data from a live network, or from a captured file.
This is a public domain version of a commercial software. I stripped out the proprietary protocols decoders and made it free.