Copyright (c) Mike Perham You may choose to license Sidekiq in one of two ways: - Open Source under the GPLv3 Please see for license text. - Commercial License The Sencha commercial software license in COMM-LICENSE. You must pledge $50 to my Pledgie fund at http://www.pledgie.com/campaigns/16623 to use this license. This commercial license is just meant to help support my OSS work. If you do buy the commercial licensing option, thank you for your support!