As their name implies Gateway is based in St. Louis and has been active in the disc golf community since 1994. When they're not busy help design disc golf courses (the current count is over 90!) they have created a special line of discs including their popular putter the Wizard.
They were the first to develop wide-winged drivers to battle wicked headwinds and currently have over 32 PDGA-approved models available in three plastic blends: Diamond, Platinum and Sure Grip. They've recently started working with hemp polymers which is sure to attract a, uh... um... new market of players.