LingQ is a language learning platform built on the principle of comprehensible input. It provides a vast library of articles, podcasts, interviews, and books, often with accompanying audio. As users read and listen, they can instantly look up new words and save them as "LingQs" for later review with a built-in spaced repetition system. The app visually tracks vocabulary growth, allowing learners to choose content suited to their level. It's an excellent tool for intermediate to advanced learners looking to expand their vocabulary and improve comprehension through massive exposure to authentic material.

Mango Languages offers a structured, conversation-focused curriculum available for a wide range of languages. Its methodology involves breaking down sentences into component parts and encouraging the learner to construct them piece by piece. Lessons emphasize practical communication and are enriched with cultural notes. A notable feature is the voice comparison tool, which allows users to record themselves and visually compare their pronunciation waveform to that of a native speaker. Many users can access Mango Languages for free through participating public libraries, making it a very accessible option.