Clozemaster is a language learning game focused on building vocabulary through mass exposure to sentences. The core mechanic involves filling in a missing word (a "cloze") in a sentence. It uses a spaced repetition system to re-test words and features a heavily gamified interface with points and leaderboards. Sourced from a large corpus of translated sentences, it's an excellent tool for intermediate learners to move beyond basic vocabulary and see words used in a wide variety of contexts, which can implicitly reinforce grammar.

Rosetta Stone is known for its signature immersion methodology, which teaches language entirely without translation by relying on picture and word association. This approach encourages learners to develop intuition and "think" in the target language from day one. The program is a highly structured, comprehensive course with a polished interface and a proprietary speech-recognition engine ("TruAccent") for pronunciation feedback. However, the complete lack of explicit grammar explanations and reliance on repetitive matching exercises can be slow and frustrating for learners trying to grasp complex or abstract concepts, making its method effective for some but not all.