There are a number of cable fly exercises that you can do for the chest. These include cable crossover, regular cable fly, low cable fly, high cable fly, seated cable fly, decline cable fly, push-up cable fly, and more. All of these work similar muscle groups to the dumbbell fly. From my experience, I don’t believe there is a single best cable fly exercise and my advice would be to try all of these to see what you like the most. Personally, I do the regular and low cable fly the most often but that’s mainly because it can be hard to find a bench that’s free in the gym I go to.