Transparent Language Online This link opens in a new windowTransparent Language Online provides a fun, effective, and good experience for learners of every level looking to build their listening, speaking, reading, and writing knowledge in a foreign language. Combining robust courses, supplemental vocabulary, extensive grammar resources, and mobile apps, Transparent Language Online is the most complete language-learning system. With over 110 languages to choose from, including English for speakers of over 30 languages, there is something for every learner.