Parley is a robust vocabulary trainer designed to assist users in memorizing vocabulary efficiently, particularly for those learning foreign languages. Utilizing the spaced repetition learning method, Parley optimizes the retention of new words and phrases. The program features a variety of training modes, including Flash Cards, Mixed Letters, Multiple Choice, and Written exercises, catering to different learning preferences. Users can also engage in language-specific training that includes articles, comparison forms, conjugations, and more.

The application allows users to download vocabulary collections through the 'Get Hot New Stuff' feature or create custom collections using its built-in editor. This flexibility makes Parley suitable for a wide range of learning tasks beyond just language acquisition. With its user-friendly interface and diverse training options, Parley stands out as a valuable tool for anyone looking to enhance their vocabulary.