GameBoy Dev'rs
Detailed information concerning the programming, modification, and hacking of Game Boy hardware.
http://www.devrs.com/gb/

GameBoy Guts
Photos of contents of cartridges.
http://uk.geocities.com/gameboycartsuk/index.html

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

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

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

The Blue Hippo's Paradise
Various cropping and RAM utilities.
http://bluehippo.freeservers.com/

Game Boy
Source code and utilities.
http://shen.mansell.tripod.com/games/gameboy/gameboy.html

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

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

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

Ken's Gameboy and PIC Projects Page
Utilities and projects.
http://www.geocities.com/kkaarvik/gameboy.html

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

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

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

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

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

The Fountain Of Decay
Code editor and source code.
http://members.lycos.co.uk/GBCE/

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

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

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

Rednex Gameboy Development System
Free development tool.
http://www.otakunozoku.com/1999/08/01/rednex-gameboy-development-system/

MQP Game Boy Project
Program and information allowing classic books to be read on Game Boy.
http://www.mqp.com/fun/