Which language learning platform's logo features a green owl mascot named 'Duo' that was specifically designed to evoke friendliness while transcending language barriers?

In the world of language and linguistics, corporate branding often leverages linguistic principles to create memorable and effective logos and slogans. Companies invest heavily in linguistic expertise to ensure their brand communicates effectively across cultures and languages. This trivia question explores how major language-focused companies have developed their visual identity through careful linguistic consideration.

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Duolingo
Rosetta Stone
Babbel
Lingoda