Such apps can be found on:

• The very well organized 'rufus.w3.org' server on http://rufus.w3.org/linux/RPM/contrib/libc6/i386/

• The Linux Center where all application are listed http://www.linux-center.org

• Freshmeat quickfinder on http://news.freshmeat.net/ that allows you to find the lastest versions.

• AppWatch at http://appwatch.com/Linux which does the same efficiently. You can see the latest applications on the right column.

• Another applications source is the Cooker from Mandrakesoft.

Anyways, try avoiding upgrading Mandrake specific packages (those that can be found in the Mandrake distribution) with RedHat's ones. You could lose Mandrake's benefits.