Rosetta Stone is proprietary language-learning software produced by Rosetta Stone, Ltd. Its title and its logo are an allusion to the Rosetta Stone, an artifact inscribed in multiple languages that helped researchers to decipher Ancient Egyptian by comparing it to the Greek inscription.

The Rosetta Stone software utilizes a combination of images, text, and sound, with difficulty levels increasing as the student progresses, in order to teach various vocabulary terms and grammatical functions intuitively, without drills or translation. Their method is called the Dynamic Immersion method. The goal is to teach languages the way first languages are learned.

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Instruction takes the form of four units per language level. Each unit is then sudivided into four core lessons. Each core lesson is approximately 30 minutes followed by sublessons. Sublessons take the form of Pronunciation, Writing, Vocabulary, Grammar, Listening, Reading, Speaking, and Reviews. At the end of each unit is a Milestone, which reviews the material covered in that unit in an interactive activity.