EPEL

http://fedoraproject.org/wiki/EPEL

[root@centos64 ~]# rpm -Uvh http://fedora-epel.mirror.lstn.net/6/i386/epel-release-6-8.noarch.rpm
Retrieving http://fedora-epel.mirror.lstn.net/6/i386/epel-release-6-8.noarch.rpm
warning: /var/tmp/rpm-tmp.Hx2yNk: Header V3 RSA/SHA256 Signature, key ID 0608b895: NOKEY
Preparing...                ########################################### [100%]
   1:epel-release           ########################################### [100%]

Now you can install packages from EPEL