I started out using DAT, but now my "go to" apps are Truckloads and 123Loadboard. They are free. I pull a flatbed, but you can put dry van, reefer, or flatbed in the search features. Both those apps also allow brokers to offer a price, with some pretty good prices being offered in some places.
I understand that if you get the paid subscription to DAT you can also post your truck. Be prepared for your phone to blow up if the area is hot. Post everything that gives you an advantage, such as having tanker and hazmat endorsements.
Most of my freight comes from the company I am leased to, but I often find myself own backhauls. If I was independent or in a situation where I found most or all of my loads, I would subscribe to DAT.