> Our application also plan to support other popular databases in the
> near future as well, such as MSSQL, Oracle, PostgreSQL, MySQL etc.
>
> Also the DAC must support the new UTF-8 Charset well as our
> application is multi-language.
>
> Can any one give some suggestion please?

For Firebird connection only, I'd suggest FIB+ by Devrace. For
universal DAC - try AnyDAC.

SY, SD.