Hyper Em
Win32 graphical frontend for any command line launched emulator.

EMUStation
Universal Frontend, featuring built-in IPS patcher, ZIP support, and Explorer integration.

Game Launcher
A universal DOS front end for emulators.

Genesis LaunchTool
Header tool and launcher for Genesis emulators.

GameBoy Mnu
Frontend for GameBoy 97

BOSS MSX Frontend
Frontend for the fMSX emulator.

Kemulator
A multi system open source frontend for Linux/KDE.

Raging Dragon
Skinable front end for MAME, Impact and Modeler.

Ultimate Arcade
Shareware front end for consule emulators.

KStella
A KDE frontend to the Atari 2600 emulator, Stella.

QuickPlay
Support for numerous systems and emulators.

GamebaseAMY
A database front-end for WinUAE, featuring screenshots and information of games.