#1313th of 24 in Desktop AI appsFor science, health and research
read-frog
Browser extension that translates pages and subtitles for language learners
- Stars
- 10.2k
- License
- GPL-3.0
- Last commit
- Nov 2026
- Last release
- Oct 2026
- Language
- TypeScript
5,006 on 10 Apr 202610,244 on 30 Oct 2026
From GitHub's daily star counts.
Checked on GitHub.
Overview
Read Frog is a Chrome, Edge and Firefox extension for language learners. It translates web pages in bilingual or translation-only mode, translates selected text, and adds bilingual subtitles on YouTube, X and Netflix. Saved vocabulary goes to Notebase and is reviewed as flashcards on a spaced-repetition schedule. It connects to 20+ LLM providers through the Vercel AI SDK, plus Google Translate, Microsoft Translate and DeepLX.
Who it is for: Language learners who read and watch foreign-language content in a browser
Strengths
- Works with 20+ providers including OpenAI, Anthropic, Gemini, DeepSeek and local Ollama
- Free translation backends available: Google Translate, Microsoft Translate, DeepLX
- Request batching claims up to 70% lower API cost, with retry and per-request fallback
- Custom AI actions with structured output, plus flashcard review of saved words
Weaknesses
- Dual-licensed GPLv3 and commercial; closed-source use needs a separate license
- AI transcription for YouTube videos without captions is limited to Pro and Ultra plans
- README says the project is under active development, so behavior may change
- Runs only inside Chrome, Edge or Firefox; no standalone app
What it needs
- no GPU
- Needs Chrome, Edge or Firefox, LLM provider API key or free translation service
- Models: OpenAI, Anthropic Claude, Google Gemini, DeepSeek, xAI Grok
Quick answers
Is read-frog open source?
Yes. Its code is on GitHub under the GPL-3.0 license.
Does read-frog need a GPU?
No, it runs without one.
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