I have Clear. Gotta sign up, but it's not a cable company and they have a month to month plan. Kinda sucks because it's wireless. Free internet doesn't exist unless you steal it from an unprotected router though.
"Free" internet exists in that you can go to coffee shops, libraries, McDonald's, hotels/motels, etc... and they have often have WiFi hotspots that you can connect to for free. You often need to ask them for a password, they may expect you to buy something before they give it to you. TNSTAAFL.