Duolingo is a popular free language-learning resource that offers courses in over twenty languages. It includes lessons, speaking and listening activities, and tracks your progress over time. It offers courses in Spanish, German, French, Italian, and many more languages.
Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
Identify a free foreign language learning resource.

### Response:
Duolingo is a popular free language-learning resource that offers courses in over twenty languages. It includes lessons, speaking and listening activities, and tracks your progress over time. It offers courses in Spanish, German, French, Italian, and many more languages.
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One free foreign language learning resource is Duolingo. Duolingo is a popular app that offers a comprehensive and interactive language learning experience, where users can learn over 30 languages, including many free ones.

Duolingo's free version provides access to its full range of features, including:

* Interactive lessons with gamification elements
* Bite-sized lessons that can be completed at your own pace
* Focus on vocabulary, grammar, and pronunciation
* Offline access for offline learning
* Progress tracking and rewards for improvement

Duolingo is available for both iOS and Android devices, and it's completely free to download and use, with no ads or in-app purchases.