Wash the strawberries and destem. Using the egg slicer, slice a strawberry in one direction, turn the slices 90 degrees then slice again. Slice the remaining strawberries the same way. Place the sliced strawberries in a medium bowl.
Peel and dice the two kiwis using the egg slicer the same way the strawberries were sliced. Add the kiwi to the bowl.
Peel and core the granny smith apples then finely chop them and add them to the bowl.
Using a microplane, zest the orange and add it to the bowl with the rest of the fruit.
In a separate bowl, mix the brown sugar, orange marmalade (you can also use apple jelly or apricot jam), and the juice from the orange. When the brown sugar is dissolved pour the mixture over the fruit and gently mix. Refrigerate until ready to serve.
Serve the strawberry salsa with mini vanilla wafers, butter cookies, pound cake, or taco chips.