Nokia 6670 any free symbian software?

Yes, there is. 😉

More seriously: There's plenty.

http://www.freepoc.org/
http://www.gosymbian.com/
http://bemused.sourceforge.net/

Actually, if you search this list of downloads, you will find plenty of free software (and trials for commercial apps, too): http://my-symbian.com/7650/download/index.php

thanks man!! much appreciated!!