Giada is a free, minimal, hardcore audio tool for DJs, live performers and electronic musicians. Just pick up your channel, fill it with samples or MIDI events and start the show by using this tiny piece of software as a loop machine, drum machine, sequencer, live sampler or yet...
Luppp is a music creation tool, intended for live use. The focus is on real time processing and a fast, intuitive workflow. With extensive MIDI mapping support, you can get looping just how you like!
Sooperlooper is a standalone JACK client with an engine controllable via OSC and MIDI. It also includes a GUI which communicates with the engine via OSC (even over a network) for user-friendly control on a desktop.
Launchpad lets you easily create and remix music on your iPad or iPhone. Using an intuitive 8x6 grid you can trigger up to eight loops and sounds from a huge library sounds. Keep in time automatically with built-in time stretching and synchronization.
Mobius is live looping open source software for the real-time creation of audio loops, with an old fashioned (win 3.1 style) GUI, MIDI and PC-keyboard control, and a powerful scripting language to customize and control all aspects of the software externally.
Last update is from 2011/2012 and it no longer works on newer Macs.
The Reactable is an electronic music instrument available as an App and as a tangible multitouch unit for live performance and creation of music.
Loopy, the sophisticated, tactile live looper app that reinvents iPhone and iPad music making. Layer up to 12 loops with overdub, stereo, count-in, variable tempo, import/export, and full MIDI clock and control support.