Web-based Development Software |
Title |
Description |
Requirements |
6502js |
Emulator for assembling/disassembling 6502 ASM |
JavaScript |
8bitworkshop |
Learn how to program for 8-bit systems/consoles using an online IDE; "write code and see it run it instantly" |
JavaScript |
Atari Background Builder |
A playfield editor for use with batari, an easy way to create Atari 2600 games with BASIC |
JavaScript |
BBC BASIC for SDL |
BBC BASIC for WASM |
WASM |
Beebasm |
Emulator for assembling/disassembling 6502 ASM for BBC Microcomputers |
JavaScript |
Bitsy |
"a little engine for little games, worlds, and stories" |
JavaScript |
CSS Generator |
A tool to quickly generate CSS for text within a box |
JavaScript |
Drawio |
Create diagrams online and save/export in various formats |
JavaScript |
FF6Tools |
A browser-based editor utility for Final Fantasy VI (Final Fantasy 3 in USA). Current features include a map editor, battle editor, and event editor. |
JavaScript |
Final Fantasy IV Tweak |
An online editor for Final Fantasy IV (Specifically a ROM of Final Fantasy II US v1.1). The current scope is mainly to edit commands. |
JavaScript |
GB64 |
An online Game Boy and Game Boy Color ROM to N64 ROM converter; may be useful in conjunction with GB Studio |
JavaScript |
GMEdit |
An online, open-source code editor for Game Maker GML scripts |
JavaScript |
Godot v4.3 Web Editor |
Create games using the Godot's online web editor (with limitations |
WASM |
Hasher-js |
An online ROM hasher |
JavaScript |
Imaginary 6502 Emulator / Assembler |
Assemble/disassemble 6502 ASM using JavaScript |
JavaScript |
jswindow |
An easy way to use JavaScript to create movable windows on your web page |
JavaScript |
microStudio |
A free game engine online; program using microScrip, Lua, Python, or JavaScript |
JavaScript |
Pyxel Web Launcher |
Launcher tool for the WebAssembly (WASM) version of Pyxel, a retro game engine for Python |
WASM |
QBjs |
An online version of QB64 |
JavaScript |
Raverie Engine |
A pure WebAssembly (WASM) based game engine/editor that aims to recreate the vibe of Flash games |
WASM |
Ren'Py |
A free and open-source visual novel engine |
HTML5 and WASM |
ROM Patcher JS |
Use this online tool to patch ROMs |
JavaScript |
Scratch |
"Scratch is the world’s largest coding community for children and a coding language with a simple visual interface that allows young people to create digital stories, games, and animations" |
JavaScript |
SourceCoder 3 |
An online IDE for various TI-83/84 calculators and Casio Prizm, fx-9860, or fx-9750 |
JavaScript |
Text Tools |
A LOT of text-related tools; could be good for both documents and scripts |
HTML5 |
TGE (Top Gear Editor) |
Use this to edit "Top Gear" for the SNES |
HTML5 |
Tiny BASIC |
An online Tiny BASIC interpreter |
HTML5 |
TurboWarp |
"...the better version of Scratch with dark mode, addons, a compiler, and a lot more"; there is also a desktop version |
JavaScript |
Twine |
Write interactive stories and presentations |
JavaScript |
ViewJS |
Use this tool to help your website visitors view Open Document Formats like ODT, ODP, and ODS and also PDF documents online |
JavaScript |
WebGM |
Create WebAssembly (WASM) games online using a GameMaker-like interface |
JavaScript/WASM |