Learning a new language has gained popularity ever since the launch of language learning apps.
Many apps in the market will help you learn your target language not only on the go but as in your free time.
However, besides the language learning apps, some other alternatives can be used to learn a preferred language.
One of them is Language Reactor.
Now, you must be wondering what is Language Reactor. For the unversed, Language Reactor is a free Chrome Extension to learn a new language.
To learn more about Language Reactor and its alternatives, keep on reading.
Without any further ado, let’s get started:
What Is Language Reactor?
Language Reactor is a free Chrome extension that was formerly known as Language Learning with Netflix [LLN] and Language Learning with YouTube [LLY]).
It can be used to turn any video of your target language on Netflix or YouTube into a study tool.
It also increases language learning proficiency with a popup dictionary and dual subtitles on Netflix.

This is good for intermediate or advanced language learners.
In Language Reactor, you can not only see the subtitles in your target language, but it also gives you an overview of the previous and next subtitles with translations.
Language Reactor has automatic pausing that lets you review a word or hide a difficult word.
Learners can also repeat sentences or speed up or slow down audio in real time.
This language learning extension is also available as a paid subscription at $5/month which makes the process of learning a language with Netflix or YouTube more interesting.

But remember Language Reactor is a Chrome extension and will therefore work only on a desktop or laptop.
Besides Language Reactor, there are many more popular Chrome Extensions that will be quite helpful in learning a new language.
To help you out, we compiled a list of all the best alternatives to Language Reactor.
10 Best Language Reactor Alternatives (2025)
CaptionPop
CaptionPop is also similar to Language Reactor but with some added options to make the learning process easier.
As soon as you add the CaptionPop Chrome extension to your browser, it will show all the subtitles available for every video on YouTube along with the languages in which they are available.

If you need a little help with your search on YouTube for your target language videos, then CaptainPop is the best option
However, its popularity has taken a downward turn ever since YouTube stopped the option of translating subtitles on different YouTube videos.
However, it is still available on YouTube for vlogs in Italian.
Trancy is a Chrome language learning extension that is: AI-enhanced. It is quite helpful for immersive bilingual subtitles.
It gives you subtitles like Language Reactor that are a huge help in translation between your target language and the native language.

Tracy uses artificial intelligence to use the transcripts or the subtitles of the show or movie that you’re watching and creates activities like Fill in the Blanks, and speech recognition which help speed up your learning process.
Toucan

Next on the list of Chrome extensions is Toucan which has been bought by Babbel.
Toucan is known for making it easy to learn your target language without putting much strain on you.
It will immerse you in the language while you are reading with some translated words of your target language that help retain them in memory.
It is a fun way to learn the language and is quite helpful to the learner.
VocabBoost

VocabBoost can easily turn any text into a fill-in-the-blank sentence.
There will be a sentence with a closed box and all you need to do is fill the box with the right word.
It’s a Chrome extension and if you have yet to reach the intermediate level then VocabBoost is a good alternative for you.
Readlang

Readlang is good for texts, reading, writing, and more.
It is a free Chrome Extension with a simple interface where you can take text from anywhere and make flashcards out of it.
This helps you practice your target language in a fun gamified way.
Learners can also access all of the other texts other users have already imported into Readlang.
This is the best way to practice and gain proficiency in the language you are learning.
Masterlingo

Masterlingo is another popular Chrome extension that helps practice your target language by translating the words for you.
This is quite helpful in practicing the target language to master it.
Best Language Reactor Alternatives
Lingopie
Lingopie is an amazing alternative to Language Reactor. It provides subtitles in your selected language.
Once you add the Lingopie extension to your browser, it will help you learn new words while watching your favorite movies and TV shows.
This Chrome extension works on Netflix and Disney+ and turns the streaming experience into interactive language-learning sessions.
While watching movies and TV shows on Netflix and Disney+, you can read the subtitles and learn a new language.
The best thing about Lingopie is its subtitles are clickable which means you can click on any word to get the detailed translation.
Additionally, it remembers all the words you click and turns them into flashcards so that you can review them later.
If you are looking for a language Reactor alternative, you should try using Lingopie.
Immersive Translate
The next alternative to the Language Reactor is Immersive Translate.
It is a document-based Chrome extension that translates web pages, PDF documents, and eBooks.
This extension works very well, and you can use it to learn a new language while reading articles or working with documents.
While reading articles and documents, you can use this extension to find the translation of the word you don’t know.
Using the Immersive Translate extensions is very easy. All you need to do is hover over the word that you want to translate and it will show you its translation.
This Chrome extension provides the following key features:
- PDF translation
- Website translation
- Format preservation
- And more.
Rememberry
If you want to learn vocabulary then you should consider using Rememberry.
This extension has mechanics that help users review words before they forget them.
The Rememberry extension provides various features such as custom decks, different learning modes, and more that will help you memorize words.
The best part of this language reactor alternative is that it supports offline learning which allows users to continue their language learning even if they are not connected to the internet.
In addition to this, it provides progress tracking that helps you track your learning progress.
The Rememberry extension provides the following key features:
- Spaced repetition
- Custom decks
- Offline mode
Reverso
Reverso is a multi-purpose language-learning extension that works on both website and streaming platforms.
It translates articles and documents, as well as provides translated subtitles allowing users to learn a new language while watching movies and TV shows.
Reverso provides AI-generated translation which is not the best option for natural language learning.
This extension also provides context-based translation with real-word examples making it easier for users to understand new words and their meanings.
However, the Reverso extension works with Netflix, Amazon Prime, and YouTube and translates movies and TV shows.
The Reverso extension provides the following key features:
- AI translation
- Context examples
- Cross-device sync
Flewent
The last Language Reactor alternative on our list is Flewent.
This is a Chrome extension that allows users to learn a new language while reading articles, and documents, and visiting websites.
Unlike any other extension in our list, Flewent will only translate a specified percentage of words on any site.
It also features a dictionary that remembers the translated words from all pages that you can review anytime.
To start using this extension, you simply need to set the percentage translation and it will only show you the translated words based on the specified percentage.
The Flewent extension will help you learn a targeted language faster and stay productive.
Here are the key features of the Flewent extension:
- Website translation.
- PDF translations.
- Percentage translation.
That is all about the best Language Reactor alternatives for any more queries on the topic do share with us in the comment section.