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Publisher · Open source

PostgreSQL Global Development Group

The PostgreSQL Global Development Group develops PostgreSQL, an open source object-relational database system. PostgreSQL is released under the PostgreSQL License, a permissive licence similar to the BSD and MIT licences, and is free to use for any purpose.

Licensing at a Glance

  • Open source

  1. PostgreSQL is released under the PostgreSQL License, described by the project as a liberal open source licence similar to the BSD or MIT licences.[1]

  2. The licence permits use, copying, modification and distribution of the software and its documentation for any purpose, without fee and without a written agreement, provided the copyright notice and licence paragraphs appear in all copies.[2]

  3. The software is provided on an "as is" basis with no warranty and no obligation to provide maintenance, support, updates or enhancements.[3]

  4. The project states it remains committed to keeping PostgreSQL free and open source in perpetuity and has no plans to change the PostgreSQL License.[4]

  5. Postgres, PostgreSQL and the Slonik elephant logo are registered trademarks of the PostgreSQL Community Association of Canada, and their use is governed by a separate trademark policy.[5]

Products

References

  1. PostgreSQL: License · postgresql.org · retrieved 2026-09-27
  2. PostgreSQL: License · postgresql.org · retrieved 2026-09-27
  3. PostgreSQL: License · postgresql.org · retrieved 2026-09-27
  4. PostgreSQL: License · postgresql.org · retrieved 2026-09-27
  5. PostgreSQL: Trademark Policy · postgresql.org · effective 2024-11-20 · retrieved 2026-09-27
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