Stella - Stella is a multi-platform Atari 2600 VCS emulator released under the GNU General Public License...
ReCycle - ReCycle is a creative tool that helps you make the most of your grooves.
WinUAE - WinUAE is a Windows port of the emulator UAE.
VICE - Bring loops to life with the loop slicer plugin for Mac and Windows.
jGameBase - jGameBase is a fully-featured retro-gaming emulator frontend and game database utility.
Looperator - Looperator is a Multi-Effect Sequencer, chopping any audio input at the transients.