Other than Voyager1 and 2 is there any other unmanned crafts headed out to explore the universe?

Well, the Voyagers are only going to be functional to about 2020, then their power source will begin to fade, and we'll lose contact.

There are 5 such craft with enough speed heading out of the solar system right now - Voyager 1 and 2, Pioneer 10 and 11, and the New Horizons probe which will fly by Pluto in a couple of years. After Pluto, they're hoping to find another target in the Kuiper Belt New Horizons might also inspect, but last I heard, one hasn't yet been found.

Depends on what you mean by "explore".

Pioneer 10 and 11 are also quite a ways out there and will depart the solar system, but neither are communicating with earth any longer. The voyager craft will stop communicating in another decade or so due to loss of power.

New Horizons is on its way to Pluto, and will leave the solar system in a few decades.

Here's a web page that shows their locations.

http://www.nasa.gov/mission_pages/voyager/multimed...

Pioneers 10 and 11.

New Horizons.

there are dozens of craft that have missed their target and have sailed on out into the distance , most have stopped communicating, 40% of mars probes have failed and some are still going

Here are trajectories of the spacecraft escaping the solar system

http://heavens-above.com/SolarEscape.aspx?lat=0&ln...