: If you are playing on 1.9, many "clients" (like Resent Client or Astra) are actually ports that add 1.9-1.21 features to a 1.8 foundation to maintain stability.
It offers a clean UI, custom capes, and better memory management than the stock Eaglercraft build. eaglercraft 19 launcher best
You should be able to rebind sneak, sprint, and offhand actions. Many launchers lock these—avoid them. : If you are playing on 1