Koh Active is a digital marketing agency based in Chicago, Illinois, with a focus on website optimization. The company helps clients create unique, adaptive, and effective websites that increase exposure, traffic, and revenue. Koh Active also lends a hand in developing custom applications optimized for mobile and tablet devices, eCommerce-oriented sites, and market research and digital strategy. The major proficiencies of the team at Koh Active are in Ruby on Rails, user experience (UX) design, Ember.js, and mobile development. The company has worked with a variety of clients ranging from tech start-ups to some of the most recognizable brands on the planet.