Directory
AI browser tools, grouped by job
Sorted by what each tool is for rather than by feature count, with limitations stated and no prices quoted, because prices in this category go stale within weeks.
Official assistant extensions
Extensions published by the company that makes the model. Deepest integration, narrowest scope, and availability often depends on your plan.
- Claude for ChromeAnthropicAnthropic's own Chrome extension, which puts Claude in a side panel and lets it act on the page you are viewing.
- ChatGPT for ChromeOpenAIOpenAI's official Chrome extension, which brings ChatGPT into the browser and can set it as your search experience.
- Perplexity CompanionPerplexity AIPerplexity's browser extension for asking questions about the current page and running cited searches.
- ChatGPT AtlasOpenAIOpenAI's own browser, which puts ChatGPT alongside the page rather than in a separate tab.
- Gemini in ChromeGoogleGoogle's assistant surfaced inside Chrome itself, able to answer about the page you are on.
Multi-model sidebars
One panel that talks to several models. Convenient, usually subscription-based, and you are trusting a third party with page content.
- SiderSider.aiA sidebar extension that routes your prompts to several different models from one panel.
- MonicaMonicaAn all-in-one AI assistant extension offering chat, writing help and page summaries across multiple models.
- MerlinFoyerA sidebar assistant that answers on any page and supports several underlying models.
- HARPA AIHARPAAn automation-leaning extension that combines page reading, web monitoring and AI commands.
- MaxAIMaxAIA sidebar assistant with shortcuts for summarising, rewriting and translating whatever is on screen.
Page and video summarisers
Single-purpose tools that condense the page you are on. Fast, but built around one page at a time.
Context senders
Tools whose job is moving page content into an assistant you already use, rather than hosting the chat themselves.
Research and highlighting
Tools for collecting, annotating and revisiting sources, with AI layered on top of the archive.
- GlaspGlaspA web highlighter that saves your highlights and notes and can feed them to AI.
- WebChatGPTHezekiah NziokaAn extension that adds web search results into the ChatGPT prompt box before you send.
- NotebookLMGoogleA web app where you build a notebook of sources and ask questions grounded strictly in them.
Elsewhere
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