LOLITA is a natural language processing system developed by Durham University between 1986 and 2000. The name is an acronym for "Large-scale, Object-based, Linguistic Interactor, Translator and Analyzer". LOLITA was an early example of a substantial application written in a functional language: it consisted of around 50,000 lines of Haskell, with around 6000 lines of C. It is also a complex and demanding application, in which many aspects of Haskell were invaluable in development. Later systems based on the same design include Concepts and SenseGraph.