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Browser Ext. AI apps

Browser-based AI — extensions and agentic browsers that read, summarize, and act on the web.

8 apps · researched & kept current by Claude Code

Filter & search these 8 apps
  • View Immersive Translate details
    Browser Ext.FREEMIUM

    Immersive Translate

    Immersive Translate

    Bilingual side-by-side translation for web pages, PDFs, ebooks, and video subtitles.

    Immersive Translate is a browser extension that renders foreign-language pages bilingually, showing the translation alongside the original text instead of replacing it. It covers web pages, PDFs (including scanned OCR), EPUBs, video subtitles on 100+ platforms, and manga/image translation, and lets you switch between a dozen-plus machine-translation engines and LLMs. The core extension is free; a Pro membership bundles premium engine quota.

    Worth knowing

    Its Android version ships as a standalone browser, Babel Browser, because mobile Chrome doesn't support extensions.

    • translation
    • bilingual
    • browser
    • pdf
    • +1
  • View Merlin AI details
    Browser Ext.FREEMIUM

    Merlin AI

    Foyer

    Multi-model AI assistant in a browser side-panel, on any tab.

    A Chrome extension and web app that opens a Claude / GPT / Gemini / DeepSeek panel on any page (Ctrl/⌘+M) to summarize articles, chat with PDFs, draft replies on Gmail and LinkedIn, and answer alongside Google results. One subscription spans many models on a shared query-credit allowance.

    Worth knowing

    Built by Foyer (founded 2021); backed by HubSpot co-founder Dharmesh Shah and Better Capital, with ~$7M raised.

    • browser
    • side-panel
    • multi-model
    • summarize
    • +1
  • View HARPA AI details
    Browser Ext.FREEMIUM

    HARPA AI

    HARPA AI

    AI browser agent for Chrome that automates web tasks.

    A browser extension that fuses large language models with on-page web automation, letting an AI agent read, understand, and act on web pages — navigating, extracting data, filling forms, and monitoring sites for changes. It connects to multiple AI providers and ships 100+ preset commands for research, SEO, and writing. Available for Chrome, Edge, Firefox, Brave, and Opera.

    Worth knowing

    Runs as a browser extension across Chrome, Edge, Firefox, Brave and Opera, with on-page automation processed locally, not server-side.

    • browser-agent
    • web-automation
    • chrome-extension
    • scraping
    • +1
  • View Thunderbit details
    Browser Ext.FREEMIUM

    Thunderbit

    Thunderbit

    AI web scraper that turns any page into structured data in two clicks.

    A no-code AI web scraper and automation agent that runs as a Chrome extension. It visually reads a page, suggests the fields to capture, and extracts structured rows with support for pagination, subpages, and bulk lists — exporting to Excel, Google Sheets, Airtable, or Notion. Built for lead lists, price monitoring, and research without writing selectors or code.

    Worth knowing

    Launched to a #1 Product of the Week spot on Product Hunt; seed-backed by Source Code Capital.

    • web-scraping
    • data-extraction
    • chrome-extension
    • no-code
  • View Monica details
    Browser Ext.FREEMIUM

    Monica

    Monica

    All-in-one AI assistant sidebar for any browser tab.

    Monica is an all-in-one AI assistant that lives in a browser side-panel and across mobile and desktop apps, bundling chat, search, writing, translation, and page or video summarization. It aggregates many frontier models — plus image and video generation — into one subscription that works alongside any webpage.

    Worth knowing

    Built by Butterfly Effect, the Chinese startup that later launched the viral autonomous agent Manus.

    • browser
    • side-panel
    • all-in-one
    • multi-model
  • View Glasp details
    Browser Ext.FREEMIUM

    Glasp

    Glasp

    Highlight, summarise, and chat with anything you read on the web.

    Web-highlighter + AI extension. Save passages from any page, then ask AI for summaries, related ideas, or chat across your knowledge base. BYO key keeps your reading history private.

    Worth knowing

    Founded in SF in 2021 around a 'digital legacy' mission — preserving your learnings for future generations.

    • highlights
    • read-later
    • summarize
    • byo-key
  • View Sider details
    Browser Ext.FREEMIUM

    Sider

    Sider AI

    Multi-model AI side-panel for any browser tab.

    Browser extension that drops a Claude / GPT / Gemini panel onto any page — summarize the article, chat with the PDF, translate the YouTube transcript. Pluggable across providers in one subscription.

    Worth knowing

    Founded in 2023 by Joel Liu and based in Boston; the extension now reports over 10 million active users.

    • browser
    • side-panel
    • multi-model
    • summarize
  • View MaxAI details
    Browser Ext.FREEMIUM

    MaxAI

    MaxAI.me

    All-in-one in-browser AI assistant. Multi-model.

    Same shape as Sider — multi-model AI sidebar that follows you across the web. Strong on quick actions (summarise, rewrite, translate) and saved prompt templates.

    • browser
    • sidebar
    • multi-model
    • quick-actions