Zanpakutō are the signature weapons in the world of Bleach, and each of them has their own astounding ability. Most start off looking like ordinary swords, but quickly transform into something far more interesting.
Which Zanpakutō is the best one? That depends on your preferences. If you like your weapons creepy, you might like Ashisogi Jizō, Mayuri Kurotsuchi's poisonous Zanpakutō. Prefer a little elegance? Then Rukia Kuchiki's Sode no Shirayuki might be right up your alley.
Vote up the best Zanpakuto, and vote down the ones that you don't find all that interesting.
Senbonzakura is a blade that can be split into thousands of miniature blades which look like cherry blossoms. Byakuya can control these fragments independently, and use them for both offensive and defenisve purposes.
Benihime is one of the only Zanpakutō with a female spirit that's used by a man. It has a wide range of different abilities, including creating nets and barriers out of energy, and cutting and creating explosions.
Unlike most Zanpakutō, Kyōka Suigetsu isn't used to strike people down. Instead, it takes control of the target's five senses to produce hallucinations so vivid that it's nearly impossible to distinguish them from reality.
Zangetsu's abilities are complex, especially when in Bankai form. Essentially, the swords absorb spiritual energy from Ichigo's body, and send it blasting out at targets in powerful bursts.