Copyright (c) Contributed Systems LLC Sidekiq is an Open Source project licensed under the terms of the LGPLv3 license. Please see <http://www.gnu.org/licenses/lgpl-3.0.html> for license text. Sidekiq Pro has a commercial-friendly license allowing private forks and modifications of Sidekiq. Please see https://sidekiq.org/products/pro.html for more detail. You can find the commercial license terms in COMM-LICENSE.