If you need a client that bypasses anti-cheats like a ghost, LiquidBounce is superior to Future in some ways. It uses a scripting engine (JavaScript) allowing custom "disablers."
Wurst has been around since Minecraft Alpha. It is ugly, but it is . It lacks the refined Crystal PvP of Future, but for basic flight, X-Ray, and aimbot, it is unbeatable. Minecraft Future Client Free