word-atlas vs read-frog
IELTS vocabulary study compared with web-based language learning
word-atlas is a browser-based IELTS vocabulary app with illustrated cards, exercises, and FSRS review. read-frog is a browser extension for studying languages while reading web pages and YouTube subtitles, with translation and AI-assisted tools.
word-atlas: Learn IELTS Vocabulary with Illustrated FSRS Review
Word Atlas is a browser-based IELTS vocabulary app built with React and TypeScript, using FSRS for spaced review. It pairs illustrated word cards, UK and US audio, and practice exercises with a downloadable vocabulary dataset; learning progress stays on the user’s device.
read-frog: Learn Languages While Reading the Web
Read Frog is a browser extension for language learners who want translation and AI-assisted study tools alongside everyday web reading. It supports multiple AI providers, selection and subtitle translation, text-to-speech, and flashcards.
| word-atlas | read-frog | |
|---|---|---|
| Language | TypeScript | TypeScript |
| License | — | GPL-3.0 |
| Stars | 2.4k | 10k |
| Forks | 576 | 744 |
| Last analyzed | Oct 27, 2026 | Oct 3, 2026 |
Key differences
- word-atlas focuses on IELTS vocabulary and includes a reusable dataset; read-frog supports language learning through everyday web content and video subtitles.
- word-atlas pairs vocabulary with illustrations, bilingual definitions, and UK and US audio; read-frog offers contextual translation, explanations, and text-to-speech.
- word-atlas stores learning progress on the user’s device and works without an account; read-frog can connect to configured AI providers or use listed free translation options.
- word-atlas is MIT-licensed application code, with vocabulary content and media under CC BY 4.0; read-frog describes dual licensing under GPLv3 and a commercial license.
- word-atlas reports 2.4k stars and 576 forks, with development concentrated in one contributor; read-frog reports 10k stars and 744 forks and describes itself as under active development.
- word-atlas provides vocabulary data in JSON and CSV for reuse; read-frog saves vocabulary and reading notes to Notebase for flashcard review.
Choose word-atlas if you…
- study IELTS vocabulary with illustrated cards and scheduled review.
- practice spelling and listening with UK or US pronunciations.
- reuse structured vocabulary data and media in learning tools or research.
Choose read-frog if you…
- read web pages with translations and explanations alongside the original text.
- study language through translated YouTube subtitles and text-to-speech.
- save vocabulary and reading notes, then review them as flashcards.
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This comparison is generated with AI from the OSRepos analyses of both projects. Always check each project's repository and documentation before choosing.