Learn Web on Toucan

Toucan is like the popular Chrome extension Grammarly, except for language learning. While you go about your day browsing the web, it will highlight idioms and words in the language of your choosing. This way you don't have to do anything to learn a language, you just pick it up while doing everything else.
Price: Free (with premium plan)
Methods: Unique
Devices: Web
Total languages offered: 12
Other languages:

Learn Web on Memrise

With Memrise, you can learn new languages in a fun and engaging way. The app uses scientifically-proven memory techniques to help you master vocabulary and grammar. It uses spaced repetition of flashcards to help you make the most out of your time learning a new language. This makes Memrise is perfect for all levels of learners, from beginner to advanced. There is a free plan and a paid one that costs $8.49/month.
Price: Free (with premium plan)
Methods: Games, Online Courses
Devices: Android, iPad, iPhone, Web
Total languages offered: 20
Other languages:

Learn Web on Rocket Languages

Rocket Languages is a language learning app that has been gaining in popularity in recent years. It offers lessons in many different languages, including English, Spanish, French, Italian, German, and Portuguese. The app is available for both Android and iOS devices, and it can be downloaded for free.
Price: depends
Devices: Web
Total languages offered: 15
Other languages:

Learn Web on Baselang

Baselang offers unlimited Spanish courses with native speakers who are ready at any minute to tutor you. If you can afford it, this unique concept is an excellent way to learn Spanish because you'll be getting custom lessons, and always working on your speaking and listening. Baselang also has a mobile app to make it even easier working on your Spanish 24/7.
Price: $149/month
Methods: Tutors
Devices: Android, iPhone, Web
Total languages offered: 2
Other languages:

Learn Web on Lingodeer

With Lingodeer, you can learn your chosen language faster and better than with manny other apps. 10 million people have already seen the success of their approach: fun and engaging exercises that will keep you coming back for more, with an adaptive learning system ensures that you're always getting the most out of your studies. They offer flashcards, audio lessons from native speakers, and stories that allow you to practice speaking.
Price: $14.99/month
Methods: Flashcards, Online Courses
Devices: Android, iPad, iPhone, Web
Total languages offered: 11
Other languages:

Learn Web on LinguaLift

Lingualift offers access to tutors, so you can get one-on-one instruction and become fluent quicker. Whether you're brushing up on your Spanish for your holiday in Barcelona or want to start learning German for a move to Berlin, the app makes learning a new language easy and fun. Just download it, select the language you want to learn, and get started. With over 2,000 exercises and quizzes, plus a fun social media component, Lngualift is a complete package for learning new languages.  
Price: $12.99/month
Methods: Online Courses, Tutors
Devices: Android, iPad, iPhone, Web
Total languages offered: 6
Other languages:

Learn Web on Coursera

Coursera has partnerships with leading universities to offer online classes on dozens of languages. Whether you're a beginner or an experienced speaker, there's a course for you. And because Coursera is always updating its curriculum, you can be sure to find the most up-to-date information and instruction. For example, if you want to learn Korean, they have classes from the esteemed Yonsei University in Seoul. Why go for gamified silly apps when you can get certified, world-class courses that have been developed over decades. Plus, instead of studying a language randomly, you can get a degree in the language that you can use later for work or for university.
Price: depends
Methods: Online Courses
Devices: Android, iPad, iPhone, Web
Total languages offered: 12
Other languages:

Learn Web on Language Reactor

Language Reactor is a language learning app on the web that uses Youtube, Netflix, and other platforms to help you learn languages. You can download their Chrome extension, that is already used by a million people, to add explanations and translations to the things you watch.

After you install the extension and you visit Youtube or Netflix, it will ask you to choose your native language. Once you click on a video, it will show you: the subtitles in the origin language, and the subtitles in your native language. It will also add a side panel with the entire text of the video.

You can click on each word, and it will open up a dictionary. It will also pronounce this word for you. If you find that people in your destination language speak too quickly, this will definitely help you understand what they are saying.

Here is an image of what all of this looks like on Youtube for a video that's 100% in French:

Overall, Language Reactor is an efficient and easy way to a language - it's also free, which means you will have nothing to lose giving it a try.

The only drawback of Language Reactor is that it might be more suited for intermediate or advanced learners. If you are an absolute beginner, you might want to spend a few months learning the basics of the language first.

Take the video above as an example. Learning what "ravin" or "reculée" mean has little to no use for someone who doesn't know what the basic sentence structure is, what the basic verbs are, or simply how to say "My name is...".

In conclusion, if you are looking to complement your learning, Language Reactor is a great tool. But if you are an absolute beginner, you might want to start somewhere else first.

Price: Free (with premium plan)
Methods: Books, Flashcards, Movies, TV shows
Devices: Web
Total languages offered: 25
Other languages:

Learn Web on Cudoo

With Cudoo, you can learn new languages quickly and easily – without ever leaving your home. Their innovative platform offers a wide variety of courses, from beginner to advanced levels, taught by experienced language instructors. You can even choose to study on your own or with a friend, and their interactive exercises will keep you engaged every step of the way. Plus, their exclusive speech recognition system ensures that you’ll get real-time feedback on your pronunciation skills.
Price: depends
Methods: Online Courses, Tutors
Devices: Android, iPad, iPhone, Web
Total languages offered: 146
Other languages:

Learn Web on FluentU

FluentU has a user-friendly interface and immersive video content, which makes learning a breeze. Whether you're a beginner or an advanced learner, FluentU has something for you. Explore different dialects, learn grammar essentials, and watch fun videos that make learning enjoyable. And with the FluentU app's offline mode, you can keep learning even when you're on the go. The main selling point of the app is fun and engaging video content that will help you improve your language skills in no time. Whether you’re a beginner or an advanced learner, FluentU has something to offer you.
Price: $22.99/month
Methods: Online Courses, Quizzes
Devices: Android, iPad, iPhone, Web
Total languages offered: 11
Other languages: