As title...

I always used rpmforge as external repo to get additional rpm for CentOS but know rpmforge seems to lack a lot of important packages with CentOS 6.

EPEL has more packages, what do you suggest to use?
Is there a better repos for CentOS 6?

I haven't take a look at CentOS 6 yet, but I've used Dag Wieërs package from time to time:

http://dag.wieers.com/rpm/

--
Travis

thanks for the reply, dag seems to not have CentOS 6 packages.

Not all the package may be built for CentOS 6, but some random packages I checked do have builds available for el6. For example:

http://pkgs.repoforge.org/openvpn/

--
Travis