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Riverbank Computing

Riverbank Computing develops PyQt, the Python bindings for the Qt framework, along with SIP and related tools. PyQt is dual-licensed under the GNU GPL v3 and the Riverbank Commercial License, which is sold per developer as a perpetual licence with a year of updates.

Licensing at a Glance

  • Open source
  • Perpetual licence

  1. PyQt is dual licensed on all supported platforms under the GNU GPL v3 and the Riverbank Commercial License, and unlike Qt is not available under the LGPL.[1]

  2. A commercial PyQt licence is needed when an application is distributed under a licence incompatible with the GPL; PyQt does not include Qt, which must be licensed separately.[2]

  3. A commercial licence covers all of Riverbank's commercial products and is required for each developer using them at any one time; developer names are not registered.[3]

  4. Licences are perpetual for the versions covered, include one year of updates, and can be renewed yearly for approximately 60% of the original purchase price.[4]

  5. The listed cost per developer is USD 670.00, EUR 600.00 or GBP 510.00.[5]

  6. Commercial licences apply to developers, not end users, so no licence is required for each copy of the application sold.[6]

Products

References

  1. Riverbank Computing | Introduction · riverbankcomputing.com · retrieved 2026-09-27
  2. Riverbank Computing | License FAQ · riverbankcomputing.com · retrieved 2026-09-27
  3. Riverbank Computing | Buy PyQt · riverbankcomputing.com · retrieved 2026-09-27
  4. Riverbank Computing | Buy PyQt · riverbankcomputing.com · retrieved 2026-09-27
  5. Riverbank Computing | Buy PyQt · riverbankcomputing.com · retrieved 2026-09-27
  6. Riverbank Computing | License FAQ · riverbankcomputing.com · retrieved 2026-09-27
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