B
Machines, operating systems and chips beginning with B.
Emulators
| Emulator | What it emulates | Type |
|---|---|---|
| B-em | Open-source emulator of the BBC Micro range and various second processors for Windows and Linux. | downloadable |
| BBC micro:bit | The BBC micro:bit v1 in the browser: a Nordic nRF51822 (ARM Cortex-M0) driving the real 5x5 LED matrix, A/B buttons and accelerometer, running original bare-metal programs with a full Cortex-M0 debugger. | online |
| BBC micro:bit v2 | The BBC micro:bit v2 in the browser: a real Nordic nRF52833 Cortex-M4F with the 5x5 LED matrix, buttons, accelerometer and the v2's new on-board speaker that plays real sound, with a full ARM debugger. | online |
| BGB | Highly accurate Game Boy and Game Boy Color emulator and debugger for Windows. | downloadable |
| Bally Astrocade | A pure-JavaScript Bally Astrocade emulator (Z80 + Bally data chip) with a full in-page debugger; boots the on-board BIOS to its built-in menu. | online |
| Basilisk II | A 68k Macintosh emulator for System 7 and Mac OS 8. | downloadable |
| Battlezone | The original 1980 Atari Battlezone arcade machine, running in the browser with an in-frame MOS 6502 debugger. | online |
| BedroomLAN Befunge Playground | A browser-based Befunge interpreter and playground that runs entirely client-side. | online |
| BeebEm | A long-lived BBC Micro and Master 128 emulator. | downloadable |
| Befunge-93 Interpreter | An authored, in-browser Befunge-93 interpreter with a live 80x25 grid, stack and a single-stepping debugger. | online |
| Befunge-93 Reference Distribution | Chris Pressey's official Befunge-93 specification and reference interpreter, bef, written in ANSI C. | downloadable |
| Bendix G-15 | An authored Bendix G-15 in your browser: the 1956 drum-memory, bit-serial vacuum-tube computer designed by Harry Huskey, one of the first personal computers, programmed in one-plus-one optimally-coded commands with typewriter output, single-steppable and disassembled. | online |
| BigPEmu | Modern Atari Jaguar and Jaguar CD emulator with full retail-library compatibility. | downloadable |
| Bit Corporation Gamate | A from-scratch Bit Corporation Gamate emulator written in JavaScript, wired into the in-page 6502 debugger. | online |
| BizHawk | Tool-assisted-speedrun-oriented multi-system emulator covering dozens of console and handheld systems. | downloadable |
| BlastEm | Fast and highly accurate open-source Genesis/Mega Drive emulator by Michael Pavone. | downloadable |
| Bochs | A highly portable open-source IA-32 (x86) PC emulator that simulates a complete Intel PC in software. | downloadable |
| Bosconian | The 1981 Namco Bosconian arcade machine, running in the browser with an in-frame Zilog Z80 debugger. | online |
| Boxer | A native macOS DOS games application built around DOSBox with a Mac-friendly interface. | downloadable |
| Brainfuck Visualizer | Browser-based Brainfuck interpreter with animated tape and pointer visualization. | online |
| Bubble Bobble | The 1986 Taito Bubble Bobble arcade machine, emulated from scratch in the browser with an in-frame Zilog Z80 debugger. | online |
| b2 | Cross-platform BBC Micro B and Master 128 emulator by Tom Seddon. | downloadable |
| beebjit | Very fast JIT-based BBC Micro emulator that compiles 6502 code to native x64 or ARM64. | downloadable |
| binjgb | Cycle-accurate Game Boy and Game Boy Color emulator available natively and compiled to WebAssembly. | both |
| blueMSX | Feature-rich Windows emulator of the MSX family developed by Daniel Vik. | downloadable |
| bsnes | Accuracy-focused Super Nintendo emulator originally created by Near (byuu). | downloadable |
| buxn | Batteries-included C implementation of the Uxn and Varvara machine with tooling. | downloadable |