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Neither Duolingo nor Rosetta Stone offers a free trial.
Duolingo is designed for Individuals, Freelancers and Small Business.
Rosetta Stone is designed for Large Enterprises, Medium Business and Small Business.
The starting price of Rosetta Stone begins at $7.99/Year, while pricing details for Duolingo are unavailable.
Some top alternatives to Duolingo includes Qualified, Workvivo, Rosetta Stone, LanguageMate, LearnOasis, Fluenz, Yabla, Pimsleur, Rocket Languages, Babbel for Business, italki and Memrise.
Some top alternatives to Rosetta Stone includes Qualified, Workvivo, A Cloud Guru, TalkBerry, Living Language, Pimsleur, Babbel for Business, italki, Mango Languages, Busuu, Memrise and Duolingo.