The best alternatives to langTube are Fluent, Duolingo, and Chatterbug. If these 3 options don't work for you, we've listed a few more alternatives below.
Learn French, Spanish, or Italian while browsing the web
Fluent automatically translates words on websites so you can learn a language while browsing the web. You never have to set aside extra time just to study. You can now learn from content that you're already interested in.
Chatterbug is a new way to help you master language skills through adaptive courses that respond to the way you learn, and one-on-one video sessions with native speakers from around the world.
Kimbapp is the modern way to learn Korean! Through the app, users can book live classes with native Korean teachers, watch engaging video lessons, and play games to improve their skills while having fun.
Tutur is your own language tutor that helps you advance your language proficiency through conversations. Detailed summaries show your progress throughout your language journey, and goes into details about your speaking deficiencies and strengths to improve your proficiency and better understand areas that need work!