PostgreSQL License

The PostgreSQL License is the free and open-source software license under which the PostgreSQL project makes its releases available. The article on PostgreSQL states that the project continues to release under it, that code comes from contributions by proprietary vendors, support companies and open-source programmers, and that, because of its permissive open-source license and extensible architecture, a broad ecosystem has developed around PostgreSQL, including numerous companies offering dedicated support and hosting and several forks and derivative databases. This entry is described from those passages of the article on PostgreSQL, because the license has no article of its own.