Alternatives

Products that do what Underline does

Expand your vocabulary while you browse the Internet

1
Vocably▲130
Expand your vocabulary while surfing the web
2022
2
Burning Vocabulary▲95
Learn vocabulary while surfing the web
2019
3
UnderlineMe▲132
Highlight, bookmark & organize research from any site
2020
4
Learn Languages with Google Translate▲93
Learn the words you translate with one click
2019
5
Linguix▲246
Check grammar instantly in real-time on your favorite sites
2020
6
TenWords▲103
Learn a foreign language by reading the news online
2019
7
Fluensa▲117
Make the entire internet a space for language learning
2025
8
Language Vocabulary Flashcards▲135
18 languages, works offline with audio & images
2023
9
Maspeak▲93
Learn words in a new language
2018
10
InterSub▲232
Learn languages when watching videos
2023
11
Sponge▲94
Absorb a new language
2023
12
FlipWord▲214
Intelligently integrate language learning into web browsing
2017
13
Toucan 2.0▲322
Learn a new language without even trying
2021
14
Wordie▲87
Grow your vocabulary while you browse the web
Apr 2026
15
Flowlingo▲283
Get fluent in a language through content immersion
2018
16
Language Learning with Netflix▲202
Use movies as study material for language learning
2019
17
Wordy▲231
Learn languages from real movie and TV clips with quizzes
Feb 2026
18RL
Readlang – Learn a language while you surf the web▲178
2015 · readlang.com
19
Termy▲122
Learn languages from games, videos, and websites
11d ago · termy.ai
20
ExplainTXT: Translate & Explain any Text▲154
Highlight any text to instantly translate and explain it.
2025
21
Subtly▲266
Learn English with smart subtitles on movies and TV shows
2017
22
Blarma▲81
Build vocabulary - learn words & languages with techniques
2022
23
Repeet▲141
Learn languages with flashcards
2025
24
Relingo▲81
Master vocabulary unconsciously via videos and articles
2022

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