We currently use anti-electrons (positrons) on a regular basis in the medical application we know as PET imaging. Additionally, we use anti-protons in nuclear research. The Large Hadron Collider runs with protons and antiprotons circulating in the acceleration ring (in opposite directions), and then "collided" in an experimental area packed with sensors and detectors.
It should be noted that matter and antimatter don't "like" each other. Any "contact" between the two leads to mutual annihilation. In the case of the positron, which is produced in beta plus decay, that positron will eventually "run into" an electron, and mass of the two particles will be entirely converted into energy. Links have been included for further investigation, and you'll find them below.