I use MyFitnessPal to count calories (the app), which has worked very well for me.
Sometimes I think I should do Weight Watchers Online instead, because I do like the idea of having certain foods be unlimited and not having to worry about tracking every bite I put in my mouth (for the unlimited foods).
Really though, I think they are pretty similar. I make better choices when I know how many calories something is, and how it will fit into my day. MyFitnessPal also tracks macros, which I find helpful. I don't follow very specific macro goals like someone on a diet like Keto might, but it has helped me increase the amount of protein I eat.