| AFS Packer||PacoChan||AFS Packer can extract the files of an AFS archive to a folder, or generate a new AFS archive with the files inside a folder. The AFS format is used in many games. Many of them from Sega.
The program requires the .NET Framework 3.5.
| Agave||master higgins||This is an editor for levels of Adventure Island 3. Currently edits enemy data (position and appearance), scene data (change one screen to another) and Higgins (the hero) initial vertical position. Has support for bank changing to choose enemies and ….||Level Editors||NES||Adventure Island III||Java||1.21||Int|
| aNESe||Hyde||aNESe is yet another Nintendo Entertainment System emulator. Graphics and sound are output through the excellent Allegro graphics library. Works with SmartRENES.||Debuggers / Special Emulators||NES||N/A||Win||4.0||Beg|
| Angelique Tile Editor||John Flemming||This utility edits 12×12 1bpp fonts which is found in Angelique and possibly some other games.||Game Specific||SNES||Angelique||DOS||0.9b||Beg|
| Apache3||Player98198||Apache3 is a disc image editor which allows you to extract files from an image and reinsert them without rebuilding the image. Apache3 is a multi-format supporting program that can handle image files in the following formats:
| AppleJuice||Mega-Dog||A G.I. Joe Level Editor.||Level Editors||NES||G.I. Joe||Win||0.4||Int|
| ARFX||RetroHelix||ARFX is an extractor for .vol archives of the game Arc Rise Fantasia.
This tool was made by me to practice programming. The source code (C#) is included in case anyone wants to see this mess or has to fix something.
||Miscellaneous||WII||Arc Rise Fantasia||Win||1.0||Beg|
| Aridia||Hugues Johnson||Open source editor for Phantasy Star III, supports editing: character stats & inventory, enemy stats, all game text, title logo & font, weapons & items and more.||Game Specific||GEN||Phantasy Star 3||Win||2.1||Beg|
| Arkalavista||Trax||Level Editor for the US version of Arkanoid.||Game Specific||NES||Arkanoid||Mac OS X||1.1||Beg|
| ArkEdit||Mega-Dog||This editor will edit all levels for both the Japanese and U.S. versions of Arkanoid.||Level Editors||NES||Arkanoid||DOS||.80b||Beg|
| armips||Kingcom||A Rom Hacking friendly PSX, GBA and NDS assembler with support for overlays and several other neat features. The full MIPS R3000 and ARM7/ARM9 instruction sets are implemented. Unlike other available assemblers, it doesn’t erase existing files.||Assembly Tools||Multiple||N/A||Win||0.7c||Int|
| Asar||Alcaro||Asar is an assembler, intended to replace xkas. It has fixed all known bugs with xkas and added many new additional commands and improvements. It maintains a compatibility mode to assemble legacy xk….||Assembly Tools||SNES||N/A||Win||1.35||Int|
| ASM2Hex||LordTech||An outdated alternative to xkas. A couple of examples provided.||Assembly Tools||SNES||N/A||DOS||1.0||Adv|
| ASM6||loopy||ASM6 is a command line assembler targeting 6502 processors. It was written for NES development, but is not geared to any system in particular and should be compatible with anything that uses a 6502. The assembler has a flexible syntax, supports local….||Assembly Tools||Multiple||N/A||Win||1.51||Int|
| Asm6#||snarfblam||Asm6# is a conversion of ASM6 from C to C#. In theory, the program should behave exactly the same. However, since the code is in C#, it should be simple integrate the assembler into a C# or VB program and even hook into the assembler’s internals….||Assembly Tools||Multiple||N/A||Indep||0.1||Int|
| AstyaEd||Mega-Dog||Here’s an Astyanax editor for Windows with an installer.||Level Editors||NES||Astyanax||Win||1.0||Beg|
| Atari 2600 Music Kit||Paul Slocum||The Atari 2600 Music Kit allows you to write music for the Atari 2600. It’s a 2600 music driver and by writing your own data file for it, you can assemble a ROM file for the 2600 that will play your music. The ROM can be used on an emulator or….||Sound||2600||N/A||DOS||2.20.03||Adv|
| Atari Hacking for Dummies||Marco Lazzeri||Atari Hacking for Dummies Tool, with AHD Files. This game can hack any Atari 2600 game that it’s configured for.||Graphics Editors||2600||N/A||DOS||0.1||Beg|
| Atlas||Klarth||Atlas is a dedicated, extensible script insertion utility capable of dealing with scripts of advanced complexity.||Script Extraction / Insertion||Multiple||N/A||Win||1.11||Beg|
| AZ40 GameBoy Assembler Kit||OEM||This is a very old Gameboy assembler kit created around 1991 by Gremlin Graphics Software. Included in the kit the assembler, macros, debugger and Amiga to Gameboy sample converter, Gameboy file clipper, set memory application and a restart applicati….||Assembly Tools||GB||N/A||DOS||0.9||Adv|