CraftBukkit is a popular server software for the game Minecraft, allowing players to create and manage their own multiplayer servers. It is built on the Bukkit API, which enables server administrators to customize gameplay through plugins, enhancing the overall experience. CraftBukkit provides a stable and efficient platform for running Minecraft servers, offering features like improved performance and support for various plugins. This flexibility allows server owners to tailor their servers to specific themes or gameplay styles, making it a favored choice among the Minecraft community.