Your browser toolbar used to be ad blockers and password managers. In 2026 it's turning into something closer to a cockpit for AI: extensions that let an assistant act on pages for you, extensions that build other extensions, and extensions that quietly watch for phishing or summarize the fifty tabs you never got back to. None of these need you to learn a new app — they just sit in Chrome and wait. Here are 12 real ones from our catalog, with actual pricing, not vague "contact us" pages.
1. BrowserOS — a whole browser with an AI agent built in
BrowserOS is a Chromium fork with an AI assistant wired directly into the browser itself, so you can tell it in plain English to summarize a page, fill out a form, or work through a multi-step task — and if you run it with a local model through Ollama, none of it has to touch a cloud API.
Pricing: free and open source (AGPL-3.0); you only pay if you choose a paid model provider like OpenAI or Anthropic instead of a local one.
Good for: developers and privacy-conscious users who want an AI agent acting on real web pages without depending on a proprietary cloud browser.
Watch out for: it's maintained by a small open-source team, not a browser vendor with a dedicated security org, and agent quality drops a lot if you pick a weak local model over GPT or Claude.
2. PlugThis — describe a Chrome extension, get it built in two minutes
PlugThis skips the whole "learn to code an extension" step: describe what you want in plain English and it generates a working, installable Chrome extension, Manifest V3 compliance included, ready to zip up for the Chrome Web Store.
Pricing: Starter $9.99/month for one extension; Builder starts at $9.99/month for the first three months then $29.99/month for three extensions plus a built-in Supabase + LLM backend.
Good for: non-technical founders and indie hackers who need one specific Chrome extension and don't want to hire a developer for it.
Watch out for: it's a recurring subscription for something most people only need to build once, and it's Chrome-extension-only — not a general app builder.
3. Pluck — click any UI element, get real code or a Figma file
Pluck lets you click on a button, card, or layout on any website and instantly get the actual HTML/CSS behind it, exported straight into the format AI coding tools like Cursor, v0, or Lovable expect — no eyeballing and rebuilding from a screenshot.
Pricing: free for 20 "plucks"/month plus 3 Figma exports/month; Unlimited is $9.99/year.
Good for: developers and designers who want to grab real UI components from existing sites instead of reconstructing them by hand.
Watch out for: it does one thing only — it's not a design tool or a code assistant on its own — and the free tier's 20 plucks/month disappears fast with regular use.
4. Skiml — turns your "read later" pile into 60-second summaries
Skiml saves articles, YouTube videos, PDFs and even podcasts the same way Pocket used to, then turns each one into a 60-second summary with the actual key points — so the backlog gets read instead of just growing forever.
Pricing: free for 50 saves/month with a weekly digest; Pro is $6/month ($72/year) for unlimited saves and a daily digest; a $149 lifetime plan is capped at 100 spots.
Good for: people with a huge reading backlog, researchers juggling many tabs, and former Pocket users looking for a replacement.
Watch out for: saved content is processed in the cloud by AI, and the free tier only gives you a weekly digest, not a daily one.
5. YouShort — a chat sidebar for any YouTube video
YouShort adds a sidebar to YouTube where you can ask what a video is about, get an AI summary, and jump straight to the timestamp you actually need instead of scrubbing through the whole thing.
Pricing: free to install, no account required (13,500+ users); pricing for any future paid tier hasn't been published.
Good for: students, researchers, and heavy YouTube users who want to extract information faster than watching in real time.
Watch out for: "chat with YouTube" is a crowded extension category, and it's entirely dependent on staying compatible with YouTube's own page.
6. BugShot — one-click bug reports for QA teams
BugShot bundles page inspection, screenshots, screen recording and AI-generated structured bug reports into one free Chrome extension, with one-click filing into Jira, GitHub, Linear or Notion.
Pricing: 100% free, no sign-up required to start.
Good for: QA engineers, designers, and dev teams who want a faster path from "found a bug" to a filed, well-documented ticket.
Watch out for: it's Chrome-only with no Firefox or Safari version, and it's really built around front-end/UI bugs, not deep backend issues.
7. LinkGrep — surfaces the context your team already shared
LinkGrep quietly tracks the links your team shares and pulls in relevant context from Notion and Slack as you browse, so "that doc someone shared last week" shows up automatically instead of requiring a Slack search.
Pricing: not public — the product is in early access, backed by Y Combinator (W23), with access on request.
Good for: teams that live in the browser and use Slack or Notion as their main knowledge base.
Watch out for: it's still early access with no general availability or public pricing, so long-term staying power is unproven.
8. MemoryPlugin — one memory shared across 21+ AI tools
MemoryPlugin keeps a single long-term memory that follows you across ChatGPT, Claude, Gemini, DeepSeek and 17+ other AI platforms, so you stop re-explaining the same context to every new chat.
Pricing: Core $89/year (or $180 billed monthly), Pro $180/year (or $300 billed monthly), lifetime plans available, 7-day free trial with a 14-day refund guarantee.
Good for: daily AI users who bounce between multiple chatbots for coding, writing, or client work and are tired of repeating themselves.
Watch out for: it requires a paid subscription after the trial, and the dedicated desktop app is currently macOS-only.
9. claudeFS — lets Claude read and edit local files, right from claude.ai
claudeFS is a free, open-source extension that lets Claude read, search and edit files in a folder on your own computer directly from a normal claude.ai chat — no file ever leaves your browser, and every write shows a diff you confirm first.
Pricing: free and open source (MIT license); works with the free claude.ai plan.
Good for: claude.ai users who want direct local file access without copy-pasting code back and forth manually.
Watch out for: it's a very young independent project (13 commits, no Chrome Web Store listing yet, install via developer mode) and isn't affiliated with Anthropic.
10. Haven — checks if a link is what it claims to be, before you click
Haven silently checks whether a link or website is actually what it claims to be before you click it, with no setup required and contextual phishing detection inside Gmail and Outlook.
Pricing: 100% free for individual use, no credit card; an Enterprise tier is quote-based.
Good for: individuals and small teams who want extra anti-phishing protection in the browser without configuring anything.
Watch out for: it's Chrome-only for now, and as a young company its long-term business model beyond the Enterprise tier isn't proven yet.
11. Phixo — scans your inbox for phishing in under 3 seconds
Phixo checks Gmail and Outlook emails for phishing signs using four detection methods at once — rules, Safe Browsing, AI, and domain reputation — then explains the risk in plain English instead of just flashing a warning icon.
Pricing: free for 10 scans/day with all four detection layers; Pro is a founder rate of $2.99/month for the first 100 users, then $4.99/month.
Good for: individuals and small teams who want serious email phishing protection beyond what Gmail/Outlook already do natively.
Watch out for: it's a very new, one-founder product with no independent track record yet, and the 10 scans/day free cap is easy to hit with heavy email use.
12. Shepherd — a free, honest look at your own browsing habits
Shepherd quietly tracks how you actually spend time online and turns it into a daily productivity score, with zero manual input and a 30-second setup.
Pricing: completely free, no account or credit card required.
Good for: anyone curious about their real browser habits who wants a zero-effort, zero-cost gut check.
Watch out for: it's Chrome-only with no cross-device or desktop-app tracking like RescueTime, and automatic categorization won't always match your personal idea of "productive."
Quick comparison
| Tool | Best for | Starting price | Category |
|---|---|---|---|
| BrowserOS | AI agent built into the browser | Free (OSS) | AI-native browser |
| PlugThis | Building a Chrome extension without code | $9.99/mo | Extension builder |
| Pluck | Grabbing real UI code from any site | Free / $9.99/yr | Dev tool |
| Skiml | Clearing your read-later backlog | Free / $6/mo | Read-later + AI summary |
| YouShort | Chatting with a YouTube video | Free | Video summarizer |
| BugShot | One-click bug reports for QA | Free | QA / bug tracking |
| LinkGrep | Surfacing team context from Slack/Notion | Early access | Team knowledge |
| MemoryPlugin | One memory across 21+ AI tools | $89/yr | AI memory |
| claudeFS | Claude reading/editing local files | Free (OSS) | Claude local file access |
| Haven | Checking if a link is really safe | Free | Anti-phishing |
| Phixo | Scanning your inbox for phishing | Free / $2.99/mo | Email security |
| Shepherd | Honest daily browsing report | Free | Time tracking |
None of these need a new app or a new workflow — that's the whole appeal of a browser extension. If you want an AI acting directly on pages, start with BrowserOS; if you're building your own extension, PlugThis or Pluck get you there without writing code. For the daily grind of tabs and email, Skiml, YouShort, Haven and Phixo each solve one specific, real annoyance rather than trying to be an all-in-one suite — install the one that matches the problem you actually have, not the one with the flashiest AI pitch.