Tatoeba is a collection of example sentences with translations for foreign language learners. Its ever-growing database contains millions of sentences from the voluntary contributions of thousands of members.
Clozemaster is a language learning website and app that helps you learn vocab within the context of a sentence. It shows you a sentence with one word missing. You learn new words by choosing the correct word from multi-choice options.
10,000 Sentence is an open-source app that helps you learn new words in your target languages. You will be presented with a series of sentences where you must guess the order of words.
LibreLingo is an open-source web app for learning language using interactive exercises. Currently, this new project only supports Spanish learning for English speakers.
Memrise is a super enjoyable and incredibly effective language learning app.
Learning with Duolingo is fun and addictive. Earn points for correct answers, race against the clock, and level up.