Rednex Gameboy Development System
- Tool to help with programming.
- http://www.otakunozoku.com/Articles/Development/RGBDS/RGBDS.html

Marat Fayzullin's GameBoy Page
- Development tools along with game and technical information.
- http://fms.komkon.org/GameBoy/

GB Assembler Studio
- Tool for fast development.
- http://web.telia.com/~u31802901/nicbit/gameboy.htm

Programmer-Net
- Game Boy Programming information and crib sheets.
- http://www.enliten.force9.co.uk/

The GameBoy Development Ring
- Webring for developers and sites about developing.
- http://d.webring.com/hub?ring=gameboydev

GBBG Game Boy Beyond Games
- A web ring for development of non game applications.
- http://d.webring.com/hub?ring=gbbggameboybeyon

The Open GameBoy Game Project
- Open source games.
- http://opengbgames.sourceforge.net/

Gameboy Terminal Server
- Tool for display usage.
- http://gbts.sourceforge.net/

GameBoy Files
- Source code and tools.
- http://www.personal.triticom.com/~erm/GameBoy/

Jeff Frohwein's GameBoy Technical Page
- Tools and information on development.
- http://www.devrs.com/

SkyRank Games
- A development team consisting of Pocket PC, GameBoy Color and Advance programmers, musicians and artists. Their goal is to design commercial quality games.
- http://www.skyrank.com

Harry Mulder's Gameboy Development
- Code and tools for assistance.
- http://www.devrs.com/gb/hmgd/intro.html

Little Sound Dj
- Game Boy music program containing a sequencer enabling waveform editing or a hardware synthesizer.
- http://www.littlesounddj.com/

Reiner Ziegler's Website
- Information and ReadPlus software for programming original Game Boy carts.
- http://www.reinerziegler.de/

MBC5/CPLD for the Gameboy
- MBC5 controller for Xilinx cpld.
- http://home1.stofanet.dk/hvaba/gameboy/mbc5cpld/index.html

Game Boy Developer's Kit
- Software toolkit.
- http://gbdk.sourceforge.net/