Duolibro is a free Chrome add-on developed by Felix Auer. It falls under the category of Browsers and specifically the subcategory of Add-ons & Tools. This program automatically changes the input language on duolingo.com if needed, making it easier for users to learn languages on the Duolingo platform.

Duolibro is designed to work with QWERTY, QWERTZ, and AZERTY keyboards, and users can easily change the keyboard layout in the options menu. It supports a wide range of languages including Spanish, German, Russian, Ukrainian, Turkish, Norwegian, Hebrew, Vietnamese, Swedish, and Danish.

With Duolibro, users no longer have to manually switch their input language on Duolingo. This add-on provides a convenient and seamless experience for language learners, allowing them to focus on their studies without interruptions.