1)   PostgresDAC 2.7.0
PostgresDAC: a PostgreSQL BDE replacement for Delphi 4-6 and BCB 5. It allows you to create Delphi/BCB5 applications with direct access to PostgreSQL DB without BDE and ODBC. The interface is BDE-like and TDataSet compatible. JPEGs in BLOBs supported
PostgreSQL, zeos, PostgresDAC, postgres, Delphi, BDE, ODBC, Builder, bds, bds2006,

 2)   InterBase Data Access Components 4.1
IBDAC is an enhanced component library for fast direct access to InterBase, Firebird and Yaffil from Delphi, C++Builder and Lazarus, supporting Windows, Mac OS X, Linux, and FreeBSD for 32-bit and 64-bit platforms.
ibdac, firebird, interbase dac, vcl, lcl, firemonkey, delphi, rad studio, rad studio xe2, bds,

 3)   Oracle Data Access Components 7.20
ODAC is a VCL/VCL.NET/CLX component library for fast direct access to Oracle from Delphi, C++Builder, and Kylix. Includes comprehensive support for Oracle functionality, including Oracle TAF, Advanced Queuing, and distributed transactions.
odac, oracle, dac, vcl, clx, net, delphi, bds, data access components, bde,

 4)   SQL Server Data Access Components 5.10
SDAC is a VCL/VCL.NET/CLX component library for fast direct access to SQL Server from Delphi and C++Builder. Supports all SQL Server data types and functionality, including MARS, bulk copy operations and reliable messaging.
sdac, sql server, mssql, ms sql, dac, vcl, clx, net, delphi, bds,

 5)   MySQL Data Access Components 5.20
MyDAC is an enhanced VCL/VCL.NET/CLX library for fast direct access to MySQL from Delphi, C++Builder, and Kylix. Includes full support for all MySQL data types, Disconnected Model, Local Failover, automatic data update functionality, and much more.
mydac, mysql, dac, vcl, clx, net, delphi, bds, core lab, data access components,