Use a paring knife to cut the peaches and nectarines into irregular shapes, slicing and dicing as you see fit. Slices, cubes, and random shapes are par for the course. Place them in a large bowl. Peel and core the Bosc pears and slice them into irregular shapes, adding them to the peaches. Slice the core the Bartlett pears, peeling is optional. Cut them into irregular shapes and add them to the peaches. Add the juice of the Key limes and the honey to the fruit in the bowl. Toss the fruit until all is covered in the juice and honey.
Serve immediately or refrigerate for a few hours before serving.