1)   SQL Server Data Access Components 4.30
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,

 2)   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,

 3)   Oracle Data Access Components 6.20
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, core lab, data access components,

 4)   InterBase Data Access Components 2.20
IBDAC is a VCL/VCL.NET/CLX component library for fast direct access to InterBase, Firebird, and Yaffil servers from Delphi, C++Builder, and Kylix. Includes full support for server data types and functionality, Disconnected Model and Local failover.
ibdac, interbase, firebird, yaffil, dac, vcl, clx, net, delphi, bds,

 5)   SecureBridge 2.00
SecureBridge is a library of nonvisual components for Delphi, Delphi for .NET and C++Builder. They provide support for secure connection with remote services using SSH protocol.
data, data protection, SSH, SSH2, Delphi, Core Lab, SecureBridge, SecureBridge components, cryptography, secure connection,