Lazy Prompter
Keep what works. Lazy Prompter is the cross-AI prompt manager and AI prompt generator for ChatGPT, Claude, and Gemini. Type 3 words, get the complete prompt, then keep it ready to reuse in one keystroke (Ctrl+Shift+L); the library grows as you go.
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Context Dictionary
Web dictionary with context information. It looks up the word if you keeps left button pressed. It also save the word and the paragraph where the word resides. You can review your word list locally with AI support.
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RLM-add-ZWNJ
Adds a Zero-Width Non-Joiner after any Right-to-Left Mark characters in the content. This can fix the rendering of some mis-spelled Persian content, for example. See discussion in https://bugzilla.mozilla.org/show_bug.cgi?id=1433886.
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이중 자막 for YouTube
유튜브 플레이어 설정(톱니바퀴) 메뉴에 '자막 2'를 추가해 두 개의 자막을 동시에 표시합니다.
LinguaLens
Reinforce studied vocabulary with eligible replacements on supported pages, plus Anki, Skritter, FSRS scheduling, and built-in review.
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Clevystar — Vocabulary Helper
Look up English words without leaving the page, save them locally, and build a portable vocabulary collection.
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HelperAI — Math & Science Solver
Select any math or science problem on screen and get instant AI-powered answers using Claude.
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Dictionary Everywhere
Double-click any word on any webpage to instantly see its definition in a clean popup. Powered by Wiktionary - free, no account, no setup, no data storage.
SmartreplyAssistant
AI side panel for Gmail & Outlook: summarize, translate and draft replies to the open email from your knowledge base.
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Txtinner
Ferramentas contextuais para texto selecionado no Firefox, com acesso à área de transferência para facilitar as operações de copiar, colar e cortar.
Voca Lyrics
Sync your music world with real-time lyrics on YouTube, Spotify, and Deezer. A modern, customizable experience to immerse yourself in every song
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Local Browser Translator
Translates web pages in place using your own local or cloud LLM — llama.cpp, Ollama, vLLM, LM Studio or any OpenAI-compatible endpoint. Built so a slow local model still feels fast.
Bionic Reader
Bolds the leading letters of each word to help your eyes anchor faster and read quicker on any page. No account or data collection.
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Dark Reader
This is a extension that helps user to focus on the content and relax with lofi music, modified version of Tranquility Reader.
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ClipCompass - AI Highlights & Summaries ► YouTube
The only YouTube extension that syncs AI highlights directly to the video → so you never miss the best of a long podcast, documentary or lecture. Get a searchable transcript, smart summaries, and exportable notes. All inside YouTube. Free to start.
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ResumeTubeAI
Copies a YouTube video transcript and opens your favorite AI chat with a ready-to-use summary prompt.
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LinguaPop
Smart language learning resource recommendations — radio, podcasts, YouTube and more, matched to your level and interests.
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Hindi Popup Dictionary
Select an English word to see its Hindi meaning, pronunciation and part of speech. Works offline, no tracking, no data collected.
Ritzau Story Check
A professional language quality tool built on the trusted editorial standards of Ritzau, Denmark’s national news agency
Multi-Language VirtualKeyboard
On-screen virtual keyboard addon for Firefox with 25+ language layouts, sound FX, text-to-speech, voice dictation, diacritics, custom themes, Cangjie, Pinyin, and Kanji converter workbench.
