DrumPad
A v-drum set built into an Excel spreadsheet. Uses Visual Basic with the BASS sound library. Samples are not included. See the release notes for more information and links.
Replacement GAPI for iPAQ 3100
The solution for closed-source projects that wouldn't run on the monochrome iPAQ 3100, this replacement graphics API will fool some color applications into thinking that they're running on 16-bit hardware by creating a faked color video buffer, then converting to 4-bit color and blitting to the real video memory. Although portable devices with monochrome screens are now a distant memory, this was a boon at the time.
GNUBoyCE for iPAQ 3100
A modification of the GNUBoyCE gameboy emulator found here, this version supports both greyscale and a better-looking scaling algorithm. The color code here is something I'm especially proud of, as it had to turn 16-bit color directly into greyscale, instead of using a palette like PocketQuake.
PocketQuake for the iPAQ 3100
This modification to the original PocketQuake adds support for the greyscale display of the iPAQ 3100 series. This was my first conversion from color to 4-bit grey.