DC Designs and CJ Simulations have released the F/A-18C Hornet that was included as part of Microsoft Flight Simulator X: Acceleration as freeware on Flightsim.to.
SwissMilSim's de Havilland Venom DH-112 Mk4 for MSFS is a handful, takes quite some getting used to, but this results in what is an incredibly rewarding experience to fly.