Native Instruments Reaktor is an advanced instrument toolkit for deep sound experimentation and exploration for sound designers, artists, and instrument builders. It allows user to create samplers, custom synths, creating elaborate modular synth patches, effects, complete instruments, and sound design tools experiment. Native Instruments Reaktor 6 comes with large numbers of factory instrument which loaded with presets, dozens of blocks including filters, effects, oscillators, modulators, and sequencers; user alaso able to download thousands of free instruments in the user library.