Phone alternatives, like Majic Jack

Looking to see if there are other choices besides Majic Jack (condisdering using it), to make use of my existing home phones.

I recently cancelled my landline phone.

I do have a cell phone, but occasionally it's nice to be able to use a traditional phone.

I know there are things like Google Voice, and Skype etc...
But they don't allow you to make use of your existing household phones.

So, anyone run across anything similar to Majic Jack ?
If so , how is it working ?