Q:

Delphi, FireMonkey and PostgreSQL

I was reading the Embarcadero FireMonkey literature and it lists a lot of db platforms, but not PostgreSQL. Is there a way to build a cross-platform PostgreSQL Delphi application?

A:

PostgreSQL Data Access Components by DevArt:

PgDAC is a cross-platform solution for developing applications using
  various IDEs: RAD Studio, Delphi, C++Builder, Lazarus (and FPC) on
  Windows, Mac OS X, iOS, Linux, and FreeBSD for both x86 and x64
  platforms. PgDAC also provides support for the FireMonkey platform,
  which allows you to develop visually spectacular high-performance
  native applications for Windows and Mac OS X.

A:

Delphi XE2 includes the dbExpress ODBC driver which can be used with  the PostgreSQL ODBC driver for access this database. Unfortunally the dbExpress ODBC driver only supports windows (for now).
For cross-platform development you can try the PgDAC component from DevArt

PgDAC is a cross-platform solution for developing applications using
  various IDEs: RAD Studio, Delphi, C++Builder, Lazarus (and FPC) on
  Windows, Mac OS X, iOS, Linux, and FreeBSD for both x86 and x64
  platforms. PgDAC also provides support for the FireMonkey platform,
  which allows you to develop visually spectacular high-performance
  native applications for Windows and Mac OS X.

