kv3 is a free software version and rewrite of the classic Kaso Verb Conjugation System'' Caso, A & Olesen, M (2005) Kaso Verb Conjugation System'' Boston MA Branden Books.
Mr. Caso created a database system in spreadsheet form whereby verbs can be conjugated. The database can be applied to most western languages. There are currently three (3) languages implemented: (1) English, (2) Italian and (3) Spanish.
This software is unencumbered and ``free'' according to GNU software standards free software.
More information can be found at the following URL http://KasoVerb.org