Browser Extensions Tools

MemoryPet puts a tiny animated pet in your Chrome toolbar that speeds up or slows down based on your system's memory or CPU usage, a glanceable, oddly satisfying read on how hard your machine is working. 2.0 adds CPU tracking alongside memory, 8 new pets, a hover-able usage graph, and a way to turn the animation off entirely and just watch a live percentage badge instead.

A developer's inspector for the page you already have open. It names the technologies behind it and shows the evidence for each, extracts the palette, fonts and assets, and scores how much of the page reads as raw AI output. It reads one tab, when you ask.

Glasp is now on Firefox. Highlight web articles, PDFs, and YouTube transcripts in four colors, add notes and tags, and summarize any page or video with ChatGPT, Claude, or Gemini. Everything lands in one searchable library and exports to Notion, Obsidian, or Markdown. Sign in on any browser or on the mobile apps and your highlights follow you. Free, and nothing to migrate.

Sider AI 6.0 introduces Wisebase for unlimited document Q&A and auto-building an AI knowledge base, Claw for automating multi-page browser tasks, and Code for instantly customizing any website with AI — no coding needed, changes persist. Available on Chrome, Edge, iOS, Android & Desktop.

Your browser, your models, your data. WebBrain is a free, open-source AI browser agent for Chromium browsers and Firefox. Run it locally with llama.cpp and most queries cost nothing — your data never leaves your device. It reads pages, extracts data, and automates tasks right from the sidebar. Prefer the cloud? Bring your own API key for OpenAI, Claude, OpenRouter, or 100+ OpenAI-compatible providers. Multilingual UI, token-conscious screenshots. MIT licensed.

Every time I didn't understand something online, I had the same workflow: Copy. Open ChatGPT. Paste. Come back. It completely broke my focus. So I built Kogvio. Highlight anything on a webpage or PDF, ask questions instantly in context, and continue learning without leaving the page. Whether it's documentation, research papers, medical textbooks, or technical diagrams, Kogvio helps you understand—not just search.

Knockoff filters the trademark-squat pseudo-brands (the SZHLUXes and HORUSDYs) out of your search results, so what's left is brands with a reputation to lose.

Tinkerfont is a free Chrome Extension and Firefox Add-on for designers, developers, and tinkerers who want to experiment with fonts on real websites -- without opening DevTools, touching the design system, or editing a stylesheet.

Unlike virtual pets that are just GIFs, Pawly stands out for five reasons: Autonomous AI: Free-flowing behavior without predefined scripts. Tamagotchi System: Real-time hunger, energy, and mood tracking. Synchronization: Instantly moves to your active tab. Progression: Dynamic minigames, levels, and accessories. Productivity: Integrated notes and task manager. The only extension that combines real AI, virtual care, and utility.

NODUS PH Radar helps makers analyze Product Hunt launches beyond the daily rankings. Explore launch velocity, race dynamics, watch rules, community spotlight opportunities, historical patterns, and upcoming scheduled launches. Gain context before launch day and understand what drives visibility and engagement.

AI agents browsing the web have a problem: they read everything — cookie banners, hidden instructions, dark patterns — and can't tell real content from a trap. Agent Browser Shield sits between your agent and the web, stripping prompt injections, masking PII, removing dark patterns, and filtering page noise that burns tokens. Free, source-available, works with browser-use and Browserbase.

Exstats unifies browser extension analytics and market research across Chrome, Edge, and Firefox. Track your products, competitors, reviews, rankings, keywords, and store trends in one place, with daily updates, history, exports, and alerts.

Discover rising Hacker News discussions before they explode. Built-in velocity tracking, pinned threads, OP alerts, instant translation and local-first privacy.

Claude had a Chrome extension. Safari didn't. So I built AlliHat. Open the sidebar and it sees the page you're on. Ask anything. Highlight text for instant explanations. Agent Mode clicks, fills forms, and navigates. Workflows run repeated tasks in one click. Memory means you never re-explain yourself. History is saved per domain. Bring your own Claude API key, or use Apple Intelligence on-device. Your key goes straight to Anthropic. No tracking. No analytics. $29.99/year after a free trial.

YM.dat is a tiny browser-based tool for reading old Yahoo! Messengerdat chat archives. It detects your Yahoo! ID from the filename, lets you enter the contact ID, decodes the conversation locally, and exports a clean text transcript. No uploads, no install, no account. Just your old chats coming back to life.

Flowsnip Library is a productivity extension for n8n power users. It adds a personal snippet library directly inside the n8n canvas so you can capture, organise, and reuse your best workflows without ever leaving the editor.

Omi A11Y is a free Chrome extension that scans any webpage for WCAG 2.1 A and AA violations right in your browser. No sign-up, no build pipeline changes, just click the extension and instantly see what's broken, why it matters, and how to fix it. Whether you're a developer auditing your own work or a designer checking a client site, Omi turns complex accessibility standards into clear, actionable guidance.

Real-time bilingual captions and accurate translation for Google Meet, Zoom, and Microsoft Teams. Take notes, save transcripts, and stay present in every meeting.

More than a wallet. Byoky is a network that lets your AI tokens flow between people, apps, and providers. Gift your spare budget to anyone. Translate between Claude, GPT, and Gemini on the fly. Connect from your phone via QR. 13 providers, open source.

.MD this page is a browser extension that extracts the main content of an article or webpage, removes clutter, and converts it into well-formatted Markdown. Whether you're saving articles, preparing content for large language models, or building knowledge bases, this extension helps you turn messy web pages into structured, readable text in seconds

You open Twitter to see what people are building. You get war updates and election arguments instead. ZenX fixes that — it silently collapses toxic, political, and controversial tweets as you scroll. 100% local. No data collected. Free & open source. Chrome, Brave, Edge, Firefox.