Rosetta Stone - Rosetta Stone is the world's most popular software for learning languages. It is offered at a cost of just $169 when purchased outright, but it is also possible to purchase language programs in a subscription format that offers ongoing support.

Crowdin - Localize your product in a seamless way

Mondly - Learn 33 languages in 500 bite-size lessons and 14 conversational modules.

POEditor - The translation and localization management platform that's easy to use *and* affordable!

Busuu - Join the global language learning community, take language courses to practice reading, writing, listening and speaking and learn a new language. Learn English with busuu's .

Lokalise - Localization tool for software developers. Web-based collaborative multi-platform editor, API/CLI, numerous plugins, iOS and Android SDK.