Sidekick64: A Versatile Software-Defined Cartridge for the C64, C128, C16, plus/4, and VIC20

Collection of cartridges, adapters, and replacements for the Commodore C64

Waveform Viewer Extension for VScode

An RP2040-based ROM emulator

Broadcast TV simulator

A web editor for c64 raster bars

mouSTer - universal USB HID class device to db9 adapter.

Sequential Logic

24 channel, 100Msps logic analyzer hardware and software

Windows X-server based on the xorg git sources (like xming or cygwin's xwin), but compiled with Visual Studio 2012 Community Edition.

Component video modification for the C64 8-bit computer

A versatile DIY serial terminal