A list of Postgresql derived forks and rebranded distributions in alphabetical order.

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Name	Vendor	License	Availability	Notes
Aster Data	Teradata	Proprietary	2005-....	Postgresql + Map/Reduce
BDR	2ndQuadrant	BSD	2014-	Postgresql Multi Master,contributed actively back to Core PG
Bizgres	Greenplum	BSD	2005-2007	Postgresql + BI features
Citus	Citus Data	AGPL-3.0	2012-	Sharding and replication across many servers with MPP[1]
Cybercluster	Cybertec	BSD	2007-2010	Clustering (pgCluster fork)
Greenplum Database	Greenplum	Apache2	2005-....	Postgresql + BI features (formerly known as "Bizgres MPP")[2]
ExtenDB	ExtenDB	Proprietary	2003-2007	Postgresql + BI Features[3]
FUJITSU Enterprise Postgres	Fujitsu	proprietary	2006-....	Full Postgresql compatibility with additional functionality[4]
GresCube	NTT DATA	Proprietary	2012-....	Database appliance solution based on Postgresql[5]
Gridsql	EnterpriseDB	GPL	2007-2010	Postgresql + BI Features (formerly ExtenDB)[6]
Great Bridge Postgresql	Great Bridge LLC	BSD	1999-2001	Postgresql re-distribution
HadoopDB	Yale University	Apache License V2.0	2009-....	Postgresql + shared-nothing cluster + Hadoop[7]
Hadapt	Teradata	Proprietary	2011-....	HadoopDB fork
Mammoth	Command Prompt	BSD	2005-2010	Postgresql + proprietary replication + extensions
Netezza	IBM	proprietary	2002-....	Appliance based on Postgresql sql engine
NuSphere Ultrasql	NuSphere	proprietary	2002-2003	Native Win32 port of Postgresql
ParAccel	Actian	proprietary	2005-....	Postgresql + BI features[8]
Pervasive Postgresql	Pervasive	BSD	2005-2006	Postgresql re-distribution
pgCluster	SRA	BSD	2002-2005	Clustering (Share Nothing)
pgCluster-II	SRA	BSD	2006-2007	Clustering (Shared Disk)
pgPool-II	pgPool GDG	BSD	2006-....	Clustering (Connection Pooling / Replication / Load-Balancing)
PipelineDB	PipelineDB	GPL v3	2015-....	Streaming sql
PostgresForest	NTT DATA	BSD	2006-2010	Clustering / PostgresForest is a fork of the JDBC driver,not from the backend code.
Postgres Plus	EnterpriseDB	OSS	2008-....	Postgresql + contrib + apps + drivers
Postgres Plus Advanced Server	EnterpriseDB	proprietary	2008-....	Postgres + Oracle compatibility + apps,formally EnterpriseDB AS[9]
Postgres-R	PGDG	BSD	2006-2010	Clustering
Postgres-X2	PGX2DG	BSD	2015-	Clustering (formerly Postgres-XC)
Postgres-XC	PGXCDG	BSD	2010-2013	Clustering[10]
Postgres-XL	PGXLDG	BSD	2014-....	Clustering
PowerGres	SRA OSS	proprietary	2003-....	Native Win32 port of Postgresql and Linux RPM
PowerGres Plus	SRA OSS	proprietary	2003-....	Postgresql + custom storage engine,redundant WAL,encrypted database[11]
Postgresql for Solaris	Sun	TPL	2006-2009	Postgresql re-distribution
RecDB	umn.edu	BSD	2013-....	Recommendation Engine[12]
Red Hat Database	Red Hat	BSD	2002-2003	Postgresql re-distribution
Redshift	Amazon	Private/Cloud-based	2013-....	Data Warehouse on AWS (based on ParACCEL)[13][14]
Stado	Stado GDG	GPL	2011-2011	Postgresql + BI Features (fork of Gridsql)[15]
TelegraphCQ	UC Berkeley	BSD	2000-2008	Data Stream oriented fork of Postgresql
ToroDB	8Kdata	AGPLv3	2015-...	Turns Postgresql into a Nosql database compatible with MongoDB. It can work as a standalone database or a secondary node of a MongoDB replicaset.
TruCQ	Truviso	proprietary	2008-2012	Fork of TelegraphCQ
Vertica	HP	proprietary	2005-....	Column-oriented DataWarehouse (created by Stonebraker),@H_541_502@ may only be forking the psql client library.
Yahoo! Everest	Yahoo!	private	2008-....	multi-petabyte database / MPP[16]

Related documents

• https://en.wikipedia.org/wiki/Template:Timeline_PostgreSQL
• https://github.com/rafaelma/postgresql-timeline
• http://de.slideshare.net/pgconf/elephant-roads-a-tour-of-postgres-forks
• https://github.com/daamien/artwork/tree/master/inkscape/PostgreSQL_timeline