Which woodwind family can transpose?

The woodwind family that can transpose includes instruments like the Clarinet, Saxophone, and some flutes. These instruments are often pitched in different keys, meaning they play written notes that sound different from concert pitch. For example, a B-flat clarinet sounds a whole step lower than written, while an E-flat Alto Saxophone sounds a major sixth lower. This transposition allows for a variety of tonal colors and harmonies in ensemble settings.