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PostgreSQL - http://www.postgresql.org/
Sophisticated open-source Object-Relational DBMS supporting almost all SQL constructs, including subselects, transactions, and user-defined types and functions. Completely free database |
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PhpPgAdmin - http://phppgadmin.sourceforge.net
Feature list and downloads for a web-based administration tool.[Open Source, GPL] |
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PostGIS: Geographic objects for PostgreSQL - http://postgis.refractions.net/
Spatially enables the server, allowing it to be used as a backend spatial database for geographic information systems (GIS). |
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EnterpriseDB - http://www.enterprisedb.com/
A relational database management system based on PostgreSQL. It adds compatibility and performance features. |
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Red Hat Database - http://sources.redhat.com/rhdb/
A version of Postgres that has been optimized for the Red Hat Linux distribution. |
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PostgresDAC - http://www.microolap.com/products/connectivity/postgresdac/
Borland Delphi/C++Builder component set for direct access to PostgreSQL without BDE or ODBC. |
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2ndQuadrant - http://www.2ndQuadrant.com
Training and support for development, tuning, and replication. Site includes course outlines, pricing, and schedules. |
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Search PostgreSQL Sites - http://www.pgsql.ru/
A searchengine for PostgreSQL-Documentation. Sample application for Tsearch2. |
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PostgreSQL Inc. - http://www.pgsql.com/
Commercial support for the object-relational database management system, PostgreSQL, as well as full database hosting. |
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PostgreSQL Autodoc - http://www.rbt.ca/autodoc/
Automated creation of PostgreSQL documentation in Dia, Docbook, HTML, and GraphViz formats. |