These are my favourites that I’ve stumbled across, catalogued here so I can easily find them again whenever I feel the need for a retro computing fix…
These all need a modern (aka html5) browser with a fairly modern PC.
- JSSpeccy - ZX Spectrum
- qaop/js - ZX Spectrum fullscreen. Click on sides of window for menu
- JtyOne - ZX81 Emulator, with games! 3D Monster Maze anyone?
- EstyJS - Atari ST
- jsBeeb - BBC Model B / Master
- Scripted Amiga Emulator - Amiga emulator with some demos and free games
- jsnes - Online NES emulator, includes some classic games