Free Calling app

[flower_petals]

After getting rid of my ridiculous plan with telus (canada) and my android, I dug out my old trusty optimus 7. I was only using a very few number of minutes a month felt like the plan was too much for what I was using. I am looking for free calling apps (like fongo, or text +) that allow calls over data. The ones in the marketplace I really don't recognize. Is anyone using one of these apps? Thanks