Alternatives to Gearsystem
An accurate Sega Master System, Game Gear and SG-1000 emulator with a built-in debugger. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Gearsystem
An accurate Sega Master System, Game Gear and SG-1000 emulator with a built-in debugger.
Replacements
Listings that take over the same core job as Gearsystem.
Genesis Plus GX
Accurate Sega 8-bit and 16-bit emulator, widely used as a libretro core.
Genesis Plus GX covers Master System, Game Gear and SG-1000 plus Mega Drive and Sega CD in one core, but it is usually run through RetroArch rather than standalone.
Emulicious
A free multi-system emulator for Game Boy, Master System, Game Gear and MSX with debugging tools.
Emulicious handles Master System and Game Gear plus Game Boy and MSX with an extensive homebrew debugger, but it runs on Java and its source code is not published.
MAME
Documents and recreates thousands of arcade machines, consoles and old computers, with accuracy as the point.
MAME covers thousands of arcade, console and computer systems under GPL-2.0, so moving to it trades a Sega 8-bit focus for a much broader but more complex program.
Similar software
Related functionality, not a direct replacement.
Gearboy
An accurate Game Boy, Game Boy Color and Super Game Boy emulator with a built-in debugger.
BlastEm
Cycle-accurate Sega Genesis and Mega Drive emulator.
RetroArch
One front end for dozens of emulators, with unified settings, shaders and a controller setup you only do once.
openMSX
An open-source MSX computer emulator that aims for accurate emulation, with a built-in GUI and debugger.
Mesen
Cycle-accurate multi-system emulator with a serious debugger.
