Stella - Stella is a multi-platform Atari 2600 VCS emulator released under the GNU General Public License...
VICE - Bring loops to life with the loop slicer plugin for Mac and Windows.
WinUAE - WinUAE is a Windows port of the emulator UAE.
Initial Slice - Industry quality sound kits | trap vst plugins | hiphop vst plugins | rnb soundpacks | Wavetable Synthesizer | Drum Kits, Midi and Loops, free Beatmaking Tutorials and more for modern producers.
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.