IIRC, few, if any, people were killed as witches in nations with the Inquistion. The Inquistion, as hard as it is to believe now, was probably an advancement in jurisprudence.
The Inquisition was originally created in order to put a stop to the practice of local authorities using heresy cases for political purposes. The church was in the business of saving souls, not eliminating enemies. It got out of hand when combined with secular authority as in the case of the Spanish Inquisition.