If you are researching specific "electronic instruments" often shared in the past, these are the most famous Reaktor creations: Iconic wavetable synthesizers. Skrewell: A chaotic, generative sound design tool.
Open Reaktor, go to File -> Open Ensemble , and select your file. 5. Avoiding Outdated/Risky Links reaktor electronic instruments rapidshare
A legendary generative sequencer based on the "Life" cellular automata. generative sound design tool. Open Reaktor