If you dont want any software that contain Mono to get installed in your Ubuntu machine, Mononono is what you want. Mononono introduces artificial conflict with mono packages and thus will let you know if the software is based on Mono or not. Just consider the case of Banshee Multimedia Player which is based on Mono. Most of the users are unaware of this fact while installing.

Installing Mononono

• Download the Mononono deb package.

• Goto Applications > Accessories > Terminal and do as follows(change the path accordingly).

            sudo dpkg -i path/to/mononono_1.0_all.deb

Special Thanks to Tim Chase