Moog synthesisers were created by Dr. Robert Moog under the company name Moog Music. Popular models include the Moog Modular, Minimoog, Micromoog, Moog Rogue, and Moog Source.
ARP Instruments Inc. was set up by Alan Peralman, and was the main competitor for Moog during the 1970'x. Popular models include the Arp 2600 and the ARP Odyssey.
Sequential Circuits Inc was founded by Dave Smith, and the company was pivotal in the creation of MIDI. Famous models include the Prophet 5, Prophet 600, and Pro-One.