At 06:16 PM 4/02/2009, you wrote:

>Is there any link I can refer to where I can download available UDF
>(which have been developed by FireBird, and not from third-party)

You don't need any link. They are all installed in the /UDF directory of your Firebird installation. But keep your wits about you if you have v.2.1.x, as many of those UDFs are now internal functions.

./hb