I haven't finished any truly significant projects, but here are a few minor ones that I developed for my own personal use and (for the most part) have found to be very handy/entertaining.

Windows Programs
Stopwatch for Windows - a simple, straightforward stopwatch/countdown program loaded with features.

QBASIC Programs
ASCII Hopper v1.9 - very amusing arcade-style platformer made entirely of ASCII characters
Duel of the Lines - simple yet surprisingly fun 2-player game
QB Doodle - fun and amusing toy-like program which is basically me "doodling" in a programming environment.
"Random" - A very handy random number generator.
"Checkday 2.0" - A small program that I made to remind me of occasions. Might seem difficult to some people. How to Use.
"Stopwatch 2.0" - Clock, stopwatch, and timer (countdown) all in one. More Info
"Com" - Handy program for MS-DOS whizes who like to use Run. Replaced by 'ANDD' below.

Game Mods - Level Packs
Commander Keen 1 level pack - requires the original game, which can be downloaded here (shareware).
Free Rider level pack - levels for the free flash game "Free Rider."

MS-DOS Batch Programs
ANDD - From the 'run' button in Windows, use any MS-DOS command, and even use more than one at a time by dividing them with the keyword 'and'!
Append - from the command line, write a short text file or add on to an old one.
"Look" - tired of waiting seemingly forever for "Find Files" to find your stuff? Download this and suffer no more (or at least, not much more).

Items Covered Elsewhere on my Site
See Stories I've Written.