Harpia is an open-source Java library for the development of machine learning algorithms which learn from hierarchically-labelled examples. It is named after the ''Harpia harpyja'' eagle. The implementation of this framework is based on the Weka Machine Learning API. Therefore, increasing the spectrum of available machine learning algorithms to be used as base classifiers in the context of "local" hierarchical classification algorithms. In addition, the evaluation module contains a variety of measures from three categories: example based, label based and level based. Furthermore, other measures such as the micro and macro average measures are also available.