Open Source Database

There are lots of open source database available. Here is the list of  most popular open source database.

1)      MySQL

http://www.mysql.com/

2)      PostgreSQL

http://www.postgresql.org/

3)      Firebird

http://www.firebirdsql.org/

4)      GNU SQL Server

http://panda.ispras.ru/~gsql/

5)      ScimoreDB

http://www.scimore.com/

6)      DXstore database system

http://www.dss.bc.ca/dx/

7)      SAP MaxDB

http://maxdb.sap.com/

8)      HSQLDB

http://hsqldb.org/

9)      CloudDB

http://www.clouddb.org/CloudDB11/

i hope this are useful for selecting the Open source database.