BizHawk is a multi-system emulator designed predominantly around the production of Tool Assisted Speedruns (TAS). It is written in C# and requires .NET 4.0 to run. BizHawk focuses on core accuracy and power user tools while still being an easy-to-use emulator for casual gaming.
Like RetroArch, BizHawk uses cores to emulate consoles. Go to http://emulation.gametechwiki.com/index.php/BizHawk for a list of the consoles BizHawk supports and which emulators the cores are based on.
Features include:
Full screen support
Controller and hotkey mapping
Joypad support (for both controller and hotkeys)
Auto/rapid fire controls
Basic re-recording and rerecording
"Bullet-proof" rerecording
Frame/lag/re-recording counters
Input display
Auto-hold
Alpha version of "TAStudio"
RAM watching/poking tools
RAM searching
Lua scripting
Rewind
Libretro support (1.11.4 onwards)
For TAS purposes, this emulator is king. Since 1.11.4, It has support for Libretro cores, making it a good alternative for RetroArch, and adds TAS support for all compatible cores.
BizHawk is a very good alternative Multi-System Emulator to RetroArch. If you are not a fan of RetroArch's controller-usage GUI and prefer a mouse-usage GUI like what other standalone emulators use and if you enjoy making speedruns then give BizHawk a try.
Comments and Reviews
The best and most accurate alternative for most old systems, no reason to download emulators individually when bizhawk just offers a better experience given all the tools it also provides.