Just switch from redhat/fedora to Ubuntu and your used to rpm’s? Or did you find an rpm that isnt available as a .deb file? I sure have so I thought I would share the easy process of converting rpm to deb, see:
To do this, install Alien using: open terminal n run command:
# sudo apt-get install alien
And convert using:
# sudo alien -k name-of-rpm-file.rpm
To install .deb packages, double click the file and click Install Package or simply:
# sudo dpkg -i name-of-created-deb-file.deb
Alternatively you can simply install rpm files, This command converts rpm to deb then installs the deb file, after it will delete the temporary .deb created
# sudo alien -i name-of-rpm-file.rpm
Singh Gurjot 