Tools that work offline, on your own device — Browser extension

36 match your filters — 36 of them answered our check today.

Watching this group for 20 days · how we check

This week16 new arrivals

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Developers6Job seekers1

SynapseClean

Live

A free, open-source Chrome extension that cleans up copied web text into compact prompts, processing everything on-device rather than a server. For anyone who pastes a lot of text into AI chat tools.

Domain registered 24 days ago

FreeWorks offlineOpen source
What to know▼
How it works
A Chrome extension that compacts messy web copy into clean AI prompts, processing everything on-device.
What's different
Free, open source, and 100% on-device rather than sending text to a server; optional Gemini Nano support.
Pricing
Free.
Best for
People who frequently paste web text into AI chat tools and want it cleaned up first.

Watched for 12 days · last checked today

Details →

CloneWebsite

Live

A Chrome extension that clones any webpage's HTML/CSS and converts it into React or Vue components, for developers who want a starting point from an existing design.

Domain registered 8 months ago

FreeWorks offline
What to know▼
How it works
Extracts HTML, CSS, images, fonts, and converts to React/Vue via Magic Paste
What's different
works offline, bring-your-own-key AI, no data leaves the browser
Pricing
free

Watched for 6 days · last checked today

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LayerAI

Live

A Chrome extension that batch-translates web pages with AI drafts you finalize and reuse, using BYOK or local Ollama.

Works offline
What to know▼
How it works
A local-first Chrome extension that collects text, batch-drafts AI translations, and auto-applies your finalized translations on revisit.
What's different
Keeps editable translation assets, glossary control, a background queue for large sites, and supports BYOK or local Ollama.

Watched for 5 days · last checked today

Details →

CivicAI

Live

An open-source browser extension that turns selected webpage text into a structured civic report entirely on-device, with no cloud calls.

Domain registered 3 months ago

Works offlineOpen source
What to know▼
How it works
An open-source Chrome/Edge extension that turns selected webpage text into a structured civic report, classifying the issue, estimating urgency, and drafting a report.
What's different
All AI inference runs locally on-device, with no backend, API key, account, or telemetry.

Watched for 4 days · last checked today

Details →

Folders & Bulk Delete for Claude

Live

Browser extension that adds folders, pinning and bulk delete to Claude's chat sidebar, which otherwise has no folders.

FreeWorks offlinePay onceNo subscription
What to know▼
How it works
adds folders, pins, title search and a cancellable bulk-delete flow on top of Claude's UI
What's different
processes on-device, chats never sent to their servers
Pricing
free tier for folders/search/single delete; $39 lifetime or $19/yr Pro for bulk delete
Watch out
unofficial, not affiliated with Anthropic; not available in the EEA yet

Watched for 6 days · last checked today

Details →

Claude Usage Tracker

Live

A Chrome extension showing your Claude usage limits, reset timers, and a projected time-left-at-this-pace right in the chat interface.

Domain registered 8 months ago

No sign-upWorks offline
What to know▼
How it works
tracks session/weekly limits locally and projects remaining time at current usage rate
What's different
fully on-device, no account needed
Pricing
free

Watched for 4 days · last checked today

Details →

StockPulse

Live

Browser extension that tracks Adobe Stock and Shutterstock earnings and performance data entirely on your device, with no cloud upload.

Domain registered 13 years ago

Works offline
What to know▼
How it works
Stores sales, earnings, and asset performance in the browser's local storage; includes niche and seasonality analysis tools.
What's different
100% local — no server ever sees your stock contributor data.
Best for
Stock photo/video contributors who want performance analytics without sharing account data with a third party.

Watched for 5 days · last checked today

Details →

Atanor

Live

Chrome extension that converts your ChatGPT, Claude and Gemini chat exports into clean Markdown, run locally in the browser.

Domain registered 1 month ago

Works offlineCan export my data
What to know▼
How it works
Converts AI chat conversations to Markdown with on-device AI refinement and PDF export
What's different
Runs entirely in-browser, no server processing
Best for
People who want to save and reuse AI conversations as readable documents

Watched for 6 days · last checked today

Details →

Pomodoso

Live

A Chrome extension that runs a Pomodoro timer alongside your Linear and GitHub tickets and Google Calendar, then turns tracked time into a standup-ready report. Built for developers tracking real focus time.

Domain registered 1 month ago

Works offline
What to know▼
How it works
A Chrome extension and web app that auto-detects your Linear and GitHub tickets as you browse, runs a Pomodoro timer measuring real focused time per task, tracks your top 3 priorities and recurring habits, and pulls in Google Calendar to count meeting time. Everything logged rolls up into a daily/weekly standup-ready report.
What's different
Local-first and pulls directly from Linear, GitHub, and Google Calendar so time tracking doesn't require manual copy-paste.
Best for
Developers who want an automatic, standup-ready record of real focused work time.

Watched for 10 days · last checked 4d ago

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FastCapture

Live

A free Chrome extension for screen and webcam recording, screenshots, and on-page annotation that runs entirely in your browser with no signup or uploads.

FreeNo sign-upWorks offlineData stays with you
What to know▼
How it works
A Chrome extension for recording your screen or webcam, taking full-page and region screenshots, and annotating directly on the page.
What's different
No signup, no watermark, no upload — everything runs locally in the browser.
Pricing
Free.
Best for
Anyone who wants quick screen capture and annotation without creating an account or uploading footage anywhere.

Watched for 18 days · last checked 9d ago

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Fudge MCP

Live

Lets AI coding agents pull real design references — fonts, colors, layouts — from thousands of live sites instead of guessing, via a local MCP server and Chrome extension.

Works offline
What to know▼
How it works
A design reference engine that lets AI coding agents search nearly 10,000 real websites by fonts, colors, components, layouts and visual similarity, running locally through MCP.
What's different
Grounds an AI agent's design choices in real, measured references and screenshots instead of asking it to invent a 'modern, premium' look from scratch.
Best for
Developers using AI coding agents who want evidence-based design references, with a Chrome extension to save ones they like.

Watched for 14 days · last checked 8d ago

Details →

AI Vault

Live

A small Chrome extension that saves highlighted text from ChatGPT or Claude chats to a local Markdown file — a capture companion for those chats, not a replacement for them.

Works offline
What to know▼
How it works
A Chrome extension: highlight text in a Claude or ChatGPT chat, hit Save, and it's written to a local Markdown file.
What's different
No cloud, no accounts, no dialogs — saves directly to a local file rather than a hosted archive.
Best for
People who want to keep highlighted snippets from AI chats without leaving the chat interface.

Watched for 13 days · last checked 7d ago

Details →

CleanSlate Bulk Delete Instagram history

Live

A Chrome extension that bulk-deletes your Instagram posts, likes, and comments locally in the browser to clean up your digital footprint.

Works offlineData stays with you
What to know▼
How it works
Automates bulk deletion of Instagram posts, likes, and comments entirely within the browser.
Watch out
100% local, no data uploaded.

Watched for 12 days · last checked 8d ago

Details →

CaptureNest

Live

A Chrome extension that takes full-page screenshots entirely in your browser, with no uploads or accounts.

Works offlineData stays with youNo tracking
What to know▼
How it works
Auto-stitches long pages and hides cookie banners/popups before capture
What's different
Runs 100% locally, no server or account needed
Pricing
Not stated
Best for
Developers and designers who need clean full-page captures privately

Watched for 4 days · last checked 3d ago

Details →

Sanala

Live

A local-first AI Finnish tutor app with a YouTube extension that turns any video into an interactive lesson.

Works offline
What to know▼
How it works
Builds a learning route from your level and interests; Chrome extension adds dual subtitles and word-tap lookup to YouTube
What's different
Local progress tracking, no data exposure, live speaking practice
Best for
people learning Finnish

Watched for 4 days · last checked 2d ago

Details →

LinkedIn Resume Tailor

Live

Free Chrome extension that rewrites your LaTeX resume to match a specific LinkedIn job posting, running entirely locally with your own LLM key.

Domain registered 1 month ago

FreeWorks offline
What to know▼
How it works
reads a LinkedIn job post, rewrites your LaTeX resume to match, shows a live PDF preview
What's different
100% local processing, nothing leaves your browser
Pricing
free
Watch out
requires you to supply your own LLM API key

Watched for 4 days · last checked 2d ago

Details →

VCrumb AI

Live

Offline-first browser extension for taking notes on YouTube videos, with optional AI summaries and chat if you supply your own API key.

Works offlineCan export my data
What to know▼
How it works
local-first note-taking synced with video timestamps; optional BYOK AI summaries and chat
What's different
works fully offline, exports notes to PDF/Markdown/text
Best for
people learning from YouTube videos who want a permanent note library

Watched for 5 days · last checked 4d ago

Details →

Lumist Studio

Live

A bundle of 15 browser-based creative and dev tools (regex tester, image compressor, kanban board, SVG builder) that run locally with zero cloud servers or subscription fees.

Works offlineNo subscription
What to know▼
How it works
A bundle of 15 browser-based creative and developer tools — including a regex sandbox, image compressor, kanban tracker, and SVG-to-React builder — that run locally via IndexedDB, plus browser extensions to extract typography and colors from pages.
What's different
Zero cloud servers across all 15 tools, replacing fragmented workflows and separate online converters.
Pricing
No subscription — everything runs locally in the browser.
Best for
Developers, designers, and creators who want to replace a fragmented set of separate online tools with one local suite.

Watched for 17 days · last checked 11d ago

Details →

GetYourLifeBack Extension

Live

A browser extension that blocks distractions, strips short-form feeds, auto-schedules focus time and nudges eye/posture breaks.

Domain registered 1 month ago

FreeWorks offline
What to know▼
How it works
Blocks sites, removes Shorts/feeds, schedules deep work, tracks a Focus Score
Pricing
Core tools free, Pro unlocks advanced controls

Watched for 6 days · last checked 5d ago

Details →

Smart History Cleaner — Auto

Live

A free Chrome extension that automatically clears browsing history, cookies, and cache using a local on-device AI model, scores your privacy, and alerts you to data breaches.

FreeWorks offline
What to know▼
How it works
runs a local Gemini Nano model in the browser to auto-clean history/cookies/cache, compute a privacy score, and surface breach alerts, plus a panic button
Pricing
free
Best for
Chrome users who want automatic privacy cleanup without sending browsing data to a server

Watched for 11 days · last checked 7d ago

Details →

PrismTab — New Tab Dashboard

Live

A browser new-tab replacement with weather, notes, a focus timer and bookmark sync, all local and private; a general personal productivity tool, not work-specific software.

Domain registered 2 months ago

Works offline
What to know▼
How it works
Replaces the browser's new-tab page with a workspace featuring weather, notes, a focus timer and native bookmark sync.
What's different
Runs 100% local and private rather than syncing through a cloud service.
Best for
People who want a personal productivity-focused new tab page.

Watched for 13 days · last checked 10d ago

Details →

Quill

Live

AI writing tools for Chrome — rewrite, proofread, summarize — that run on-device with Gemini Nano so your text never leaves the browser. Free to install.

Domain registered 30 days ago

FreeWorks offline
What to know▼
How it works
A Chrome extension that rewrites text in any tone, proofreads, summarizes, and transforms text on any page, running the AI model on-device using Gemini Nano.
What's different
Processing happens on-device with Gemini Nano, so text doesn't leave the browser, unlike cloud-based writing assistants.
Pricing
Free on the Chrome Web Store.
Best for
Chrome users who want AI writing help on any webpage without sending their text to a server.

Watched for 13 days · last checked 11d ago

Details →

SecretScout — API Key & Secret Detector

Live

A browser extension that scans pages you visit for exposed API keys and secrets (OpenAI, AWS, Stripe, GitHub, Google) entirely locally. Built for developers and security engineers guarding against credential leaks.

Works offlineData stays with you
What to know▼
How it works
A browser extension that scans pages you visit for exposed API keys and secrets from providers like OpenAI, AWS, Stripe, GitHub, and Google, checking the DOM, scripts, and network responses.
What's different
Scanning happens 100% locally — nothing leaves your browser.
Best for
Developers and security engineers who want to catch accidentally exposed credentials while browsing.

Watched for 13 days · last checked 10d ago

Details →

BugPaste

Live

A Chrome extension that bundles a screenshot or recording with console logs, network requests and environment info into one bug report, entirely on your machine. Built for developers and QA.

Domain registered 1 month ago

Works offlineData stays with youCan export my data
What to know▼
How it works
A Chrome extension that captures a screenshot or video recording along with console logs, network requests and environment info, bundling them into one paste-ready bug report; can export a video to webm or a full HTML report.
What's different
Runs 100% locally — nothing leaves your machine.
Best for
Developers and QA testers who need a complete, shareable bug report without manually collecting logs and screenshots.

Watched for 14 days · last checked 2d ago

Details →

SaaSDiet

Live

A privacy-first Chrome extension that tracks which SaaS subscriptions you actually use and their cost-per-hour ROI, so you can cancel the ones wasting money, all processed locally.

Works offlineData stays with you
What to know▼
How it works
A Chrome extension that runs silently in the background to monitor when you're active on SaaS tabs, then shows real-time usage stats, cost-per-hour ROI, and quick cancellation links for underused subscriptions.
What's different
100% local-first processing rather than sending browsing data to a server.
Best for
People who suspect they're paying for SaaS subscriptions they barely use and want data to decide what to cancel.

Watched for 15 days · last checked 2d ago

Details →

ClearCart - Hide Junk

Live

A free Chrome extension that filters fake brands and dropship junk out of Amazon search results, running locally with no account required. Built for shoppers, not sellers.

FreeNo sign-upWorks offline
What to know▼
How it works
A Chrome extension that filters fake brands, dropshipping clones, and keyword-stuffed listings out of Amazon search results, running on amazon.com, .ca, .co.uk, .com.au and .in.
What's different
100% local processing — no data collected and no account required.
Pricing
Free.
Best for
Amazon shoppers who want to skip junk listings without signing up for anything.

Watched for 15 days · last checked 2d ago

Details →

Calmify

Live

Removes distracting elements — Shorts, recommended videos, sidebars, comments, cookie banners — from cluttered websites, running entirely locally with no accounts or data collection.

Works offline
What to know▼
How it works
Blocks ads and trackers and hides distracting elements site by site, with per-site customization; nothing is sent to a cloud service.
Best for
People trying to stay focused while studying or working online.

Watched for 16 days · last checked 2d ago

Details →

BirdView

Live

Replaces your browser's new-tab page with a private local dashboard for tasks, a kanban board, quick links and a calendar, works offline and exports your data anytime.

No sign-upWorks offlineData stays with youNo tracking
What to know▼
How it works
Replaces your browser's new-tab page with a dashboard for tasks, a kanban board, a job tracker, content planners, a screenshot inbox, quick links and a calendar; searchable with Cmd/Ctrl+K and exportable to Markdown, CSV, JSON, or a full backup.
What's different
100% local-first — no account, no cloud, no tracking, works offline, with everything stored on your device.
Best for
People who want a private productivity dashboard on every new tab without creating an account or sending data anywhere.

Watched for 18 days · last checked 2d ago

Details →

adād : Helper Dyscalculia & Math Anxiety

Live

A browser tool for people with dyscalculia that rewrites prices, dates, and numbers into plain, anchored language as you browse, processing everything locally.

Works offline
What to know▼
How it works
Rewrites numbers on any page you browse — prices, dates, percentages, form entries — into plain, anchored language, such as translating a price into what portion of a real-life expense it represents.
What's different
Processes everything locally in the browser; nothing leaves your device.
Pricing
7-day free trial.
Best for
People with dyscalculia or math anxiety who find raw numbers hard to interpret while browsing.

Watched for 18 days · last checked 9d ago

Details →

Bottalk

Live

Free Chrome extension that connects two browser tabs so Claude and ChatGPT can converse with each other on a chosen topic.

FreeWorks offline
What to know▼
How it works
A browser extension that connects a claude.ai tab and a chatgpt.com tab so the two AIs can discuss a topic you choose, with control over who starts, rounds, and reply length, in English or German.
Pricing
Free.
Watch out
Runs locally with your own logins; available for Chrome and Edge.

Watched for 3 days · last checked 2d ago

Details →

Zenfeed

Live

Free local Chrome extension that hides promoted/suggested posts and AI-generated content on LinkedIn, X and YouTube.

FreeNo sign-upWorks offlineNo ads
What to know▼
How it works
Hides promoted and suggested posts, blocks user-chosen keywords, and lets you 'Rest from AI' on a timer that hides AI content and brings it back automatically.
What's different
100% local — no backend, no tracking, no account.
Pricing
Free, no ads, no upsell.
Watch out
Chrome extension only.

Watched for 3 days · last checked 1d ago

Details →

Themify Convert any website to WordPress

Live

Lets designers turn any website's look into an installable WordPress theme instead of rebuilding the design manually in WordPress.

Works offline
What to know▼
How it works
Chrome extension converts a site into an installable .zip theme, preserving animations, and runs locally.

Watched for 1 day · last checked today

Details →

Smart Tab Grouper – Organize Chrome Tabs

Live

A free Chrome extension that automatically sorts your open tabs into labeled groups by category, Development, Docs, Shopping, Social and more, with one click and no configuration.

FreeWorks offline
What to know▼
How it works
A Chrome extension that automatically organizes open tabs into labeled groups with one click, either by category (20+ categories like Development, AI Tools, Finance) or by domain (all tabs from the same site grouped together).
What's different
A 'Smart Group with AI' mode uses Chrome's built-in on-device AI (Prompt API) to read tab titles and page content and group by actual meaning rather than fixed rules, falling back to rule-based grouping otherwise.
Pricing
Free.
Best for
Chrome users who accumulate many open tabs and want them sorted without manual setup.

Watched for 18 days · last checked 2d ago

Details →

TG Downloader

Live

A free Chrome extension that downloads videos, photos, and files from your Telegram chats for offline saving.

Domain registered 2 months ago

FreeNo sign-upWorks offlineCan export my data
What to know▼
How it works
batch-downloads Telegram media with ZIP export
Pricing
free, 5 downloads/day, no account required

Watched for 4 days · last checked 3d ago

Details →

Privezap — Privacy for WhatsApp Web

Live

Adds a local privacy layer to WhatsApp Web — screen lock, blurred content, and stripped notifications.

FreeWorks offlineNo tracking
What to know▼
How it works
Locks the WhatsApp Web screen with a password, blurs names/photos/messages by element, and strips content from browser notifications, running entirely locally.
Pricing
Free, open to audit.
Watch out
Works on any Chromium browser.

Watched for 9 days · last checked 7d ago

Details →

Country Filter for X (Twitter)

Live

A browser extension that hides X (Twitter) posts from countries you pick, detecting location locally with no external servers or sign-up. A niche personal timeline filter, not a developer tool.

No sign-upWorks offlineOpen sourceNo tracking
What to know▼
How it works
A browser extension where you check countries in a popup and posts from those countries disappear from your X For You feed, Following feed, search, and reply threads; detection runs locally using known accounts, country/city keywords, post language, and public profile location.
What's different
No sign-up, no tracking, and no external servers — settings and detection stay in your browser; open source (MIT).
Best for
X users who want to filter their timeline by country without sending data to a third-party server.

Watched for 18 days · last checked 2d ago

Details →