Copyright (c) Mike Perham

Sidekiq is open source licensed under the GPLv3 for non-commerical use:

  Please see <http://www.gnu.org/licenses/gpl-3.0.html> for license text.

To purchase a commercial license, you must pledge $50 to my Pledgie
fund at http://www.pledgie.com/campaigns/16623.  The commercial license can
be found in COMM-LICENSE.