<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <HTML ><HEAD ><TITLE >Extensions</TITLE ><META NAME="GENERATOR" CONTENT="Modular DocBook HTML Stylesheet Version 1.79"><LINK REV="MADE" HREF="mailto:pgsql-docs@postgresql.org"><LINK REL="HOME" TITLE="PostgreSQL 8.0.11 Documentation" HREF="index.html"><LINK REL="UP" TITLE="External Projects" HREF="external-projects.html"><LINK REL="PREVIOUS" TITLE="External Projects" HREF="external-projects.html"><LINK REL="NEXT" TITLE="Bibliography" HREF="biblio.html"><LINK REL="STYLESHEET" TYPE="text/css" HREF="stylesheet.css"><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=ISO-8859-1"><META NAME="creation" CONTENT="2007-02-02T03:57:22"></HEAD ><BODY CLASS="SECT1" ><DIV CLASS="NAVHEADER" ><TABLE SUMMARY="Header navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TH COLSPAN="5" ALIGN="center" VALIGN="bottom" >PostgreSQL 8.0.11 Documentation</TH ></TR ><TR ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="external-projects.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="10%" ALIGN="left" VALIGN="top" ><A HREF="external-projects.html" >Fast Backward</A ></TD ><TD WIDTH="60%" ALIGN="center" VALIGN="bottom" >Appendix H. External Projects</TD ><TD WIDTH="10%" ALIGN="right" VALIGN="top" ><A HREF="external-projects.html" >Fast Forward</A ></TD ><TD WIDTH="10%" ALIGN="right" VALIGN="top" ><A HREF="biblio.html" ACCESSKEY="N" >Next</A ></TD ></TR ></TABLE ><HR ALIGN="LEFT" WIDTH="100%"></DIV ><DIV CLASS="SECT1" ><H1 CLASS="SECT1" ><A NAME="EXTERNAL-EXTENSIONS" >H.2. Extensions</A ></H1 ><A NAME="AEN75461" ></A ><P > <SPAN CLASS="PRODUCTNAME" >PostgreSQL</SPAN > was designed from the start to be extensible. For this reason, extensions loaded into the database can function just like features that are packaged with the database. The <TT CLASS="FILENAME" >contrib/</TT > directory shipped with the source code contains a large number of extensions. The <TT CLASS="FILENAME" >README</TT > file in that directory contains a summary. They include conversion tools, full-text indexing, <ACRONYM CLASS="ACRONYM" >XML</ACRONYM > tools, and additional data types and indexing methods. Other extensions are developed independently, like <SPAN CLASS="APPLICATION" >PostGIS</SPAN >. Even <SPAN CLASS="APPLICATION" >PostgreSQL</SPAN > replication solutions are developed externally. For example, <SPAN CLASS="APPLICATION" >Slony-I</SPAN > is a popular master/slave replication solution that is developed independently from the core project. </P ><P > There are several administration tools available for <SPAN CLASS="PRODUCTNAME" >PostgreSQL</SPAN >. The most popular is <SPAN CLASS="APPLICATION" >pgAdmin</SPAN >, and there are several commercially available ones. </P ></DIV ><DIV CLASS="NAVFOOTER" ><HR ALIGN="LEFT" WIDTH="100%"><TABLE SUMMARY="Footer navigation table" WIDTH="100%" BORDER="0" CELLPADDING="0" CELLSPACING="0" ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" ><A HREF="external-projects.html" ACCESSKEY="P" >Prev</A ></TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="index.html" ACCESSKEY="H" >Home</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" ><A HREF="biblio.html" ACCESSKEY="N" >Next</A ></TD ></TR ><TR ><TD WIDTH="33%" ALIGN="left" VALIGN="top" >External Projects</TD ><TD WIDTH="34%" ALIGN="center" VALIGN="top" ><A HREF="external-projects.html" ACCESSKEY="U" >Up</A ></TD ><TD WIDTH="33%" ALIGN="right" VALIGN="top" >Bibliography</TD ></TR ></TABLE ></DIV ></BODY ></HTML >