ONOMA is the first verb conjugator in Spanish that provides information about how a recently created verb is going to work. It also gives information about the irregularities in a verb, the persons and tenses affected and it gives the theorical explanation for these irregularities.
http://www.onoma.es
taken from a very interesting site, where as they say " they open the door to intuition...."
http://www.molinodeideas.es/html/es/Molino.html