Interesting links: - dmoz:Computers/Software/Databases - http://www.faqs.org/faqs/databases/free-databases/ Catalog of free database systems - http://www.unixodbc.org/ ODBC on unix - http://osdb.sourceforge.net/ The Open Source Database Benchmark (software but no results!) = Postgre__S__Q__L - http://www.postgresql.org/ A long-standing open-source RDBMS; it grew out of research at Berkeley. It is a big, mature database, with all the 'serious' features, although not all the 'enterprise' features, with decent performance (speed has improved a lot recently). = S__A__P D__B - http://www.sapdb.org/ - http://www.robelle.com/tips/sapdb.html An open-sourced component of S__A__P R/3. = Firebird__S__Q__L - http://www.firebirdsql.org/ - http://www.ibphoenix.com/ Open-sourced Borland Interbase. The database is called Firebird__S__Q__L (or just Firebird); I__B__Phoenix is "a web site and an organization that provides information and services to InterBase(r) and Firebird developers and users, those who develop applications on InterBase(r) or Firebird, and those who develop and use the underlying database engine itself." = My__S__Q__L - http://www.mysql.com/ A lightweight RDBMS; it is very fast for reads, but not so hot for writes, and is feature-poor. It's halfway between BerkeleyDB and a real RDBMS. = S__Q__Lite - http://www.sqlite.org/ A small, embeddable RDBMS. Despite its tininess, it has a lot of features, and because of it, is very fast. CategorySoftware