64drive by Retroactive: The Ultimate N64 Development Cartridge. As a big N64 fan, a few years ago I wanted some way to try out my homebrew on a real console, play translations, and just to mess around in general – but from looking at all the other solutions on the market there appeared to be tons of room for improvement and I started to make my own. After a lot of work and several years of iteration since then, what you see is the result. It's an extremely high quality product used by hobbyist and professional developers alike.
Little Sound Dj: Welcome to Little Sound Dj, the ultimate music program for Game Boy and Game Boy Color! Little Sound Dj turns a plain Game Boy/Game Boy Color into a full-fledged music workstation.
NESmaker: NESmaker is software for PC that allows users to create brand new, hardware playable, cartridge based games for the Nintendo Entertainment System in a modern development environment. These games will play on any hardware based system that can play NES games, and on any NES emulator that supports mapper 30.