: Step (auto-climb blocks), High Jump, and Spider (climb walls).
: Notable for its item duplication capabilities, which are still functional on many legacy servers. Zombe’s Modpack Minecraft Beta 1.7.3 Hacked Client
The use of hacked clients can negatively impact the experience of other players on servers, leading to an unfair advantage or disruption of gameplay. : Step (auto-climb blocks), High Jump, and Spider