Harper is an open-source grammar and spell checker that runs entirely on the device. It covers US, UK, Canadian, Australian and Indian English, and performs checks locally without cloud round-trips, telemetry or an LLM. Integrations listed include Obsidian, Chrome, Firefox, WordPress, Visual Studio Code, Neovim, Helix, Emacs, Zed and Sublime Text.
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Browser forensics tool for Google Chrome, other Chromium-based browsers, and Mozilla Firefox
How to Screenshot is a guide resource that provides instructions for taking screenshots across a wide range of major platforms. Covered platforms include Windows, Mac, Linux, ChromeOS, Android, iOS, Steam, Switch, Xbox, and PS4/5. The resource was created by Stuart Thomson in 2024, and its source code is publicly available.
HTTP Downloader is a download manager for the HTTP(S), FTP(S), and SFTP protocols that uses input/output completion ports. It is a multi-part download manager that can queue up to 100 downloads at a time, with each download split into 100 parts. The program and browser extensions for Firefox, Chrome, and Edge are offered as free open-source downloads for Windows.
Hyperbrowser offers cloud browsers, isolated sandboxes and web data APIs for AI agents. It provides Chrome sessions and microVMs that can be launched in one call and connected to Playwright, Puppeteer or an agent. The documentation describes automating websites, running code in isolated environments and scraping web data.
HyperWrite is an AI writing assistant with autocomplete, web search, and citations, offered as a browser-based document editor and Chrome extension. It provides hundreds of AI tools for content generation, research, speeches, and rewriting, plus custom AI tools. Paid plans include Premium at $19.99/month and Ultra at $44.99/month, while a free starter account offers limited access.
iAsk AI is a free AI search engine that accepts natural language questions from users and returns instant, accurate, factual answers. It is positioned as an alternative to ChatGPT and includes supplementary tools such as an AI homework helper, video tutor, Chrome extension, content summarizer, document analysis feature, and writing assistant.
Iconbuddy is an icon search and download service offering over 300,000 free SVG icons from open source libraries. Users can customize colors and sizes and export in SVG, PNG, JSX, or Base64 formats. The site also documents an MCP server for coding agents and lists extensions for Figma, VS Code, Framer, WordPress and Chrome.
Instagram Download Button is a JavaScript userscript for Greasemonkey/Tampermonkey that adds a download button and an open button to Instagram. It allows downloading or opening profile pictures and media in posts, stories and highlights with one click. The author notes testing only on Chrome, Edge and Firefox with Tampermonkey on Windows, and that it does not support the reels page.
IMDb: Link 'em all! is a user script that adds links to IMDb movie info pages. It offers multiple categories including search, movie sites, trackers, streaming, filehosters and subtitles, and can fetch search results in the background. It supports Chrome and Firefox with TamperMonkey, GreaseMonkey and ViolentMonkey, and both IMDb modern and reference layouts.
Infy Scroll is a Firefox extension, also available for Firefox for Android, that adds customized infinite scrolling to websites and automatically loads the next page. It supports the AutoPagerize and InfyScroll Databases.
Browser extension for Instant Data Scraper, adding useful tools or workflow improvements inside the browser.
A modern and intuitive Chrome extension that brings your favorite OSINT tools, metadata analyzers, and Google Dorking assistants right into your browser.
Interviews Chat is an AI interview assistant that provides real-time suggestions and live transcription during interviews. It offers AI interview preparation and mock interview practice, and responds to technical and behavioral questions in formats such as STAR answers, bullet points and follow-up questions. A Chrome extension can connect to a browser tab with a task and generate a solution with reasoning.
ISTA Research Explorer (ISTA REx) is the institutional repository presenting the scholarly output of the Institute of Science and Technology Austria (ISTA). It presents publications, open access publications, theses, data publications, scientific software and grants. The site recommends upgrading to the latest Internet Explorer, Google Chrome or Firefox.
Joplin is a free, open-source note-taking and to-do application that organises notes into notebooks. Notes are stored in Markdown and are searchable, taggable and editable, with offline-first access, end-to-end encryption, plugins and themes, and sync via services including Nextcloud, Dropbox, OneDrive and Joplin Cloud. Apps exist for Windows, Linux, macOS, Android and iOS, plus a Firefox and Chrome web clipper.
Jumpstick is a guide for discovering interesting websites through curated topic collections. Users select a topic and click a jump button to explore sites, and a Chrome extension is offered.
Just the Browser provides configuration files, documentation and installation scripts that remove AI features, telemetry data reporting, sponsored content and product integrations from desktop web browsers, using hidden settings intended for organizations. It includes manual guides for Google Chrome, Microsoft Edge, Firefox and Brave, and the project is open-source on GitHub.
Killed by Google is an open source list of dead Google products, services and devices, presented as a graveyard or memorial. The page lists entries such as ChromeOS, Google Earth Pro, Firebase Studio, Tenor API and Pixel Studio, with categories for apps, services and hardware.
KISS Translator is a simple, open-source bilingual translation extension and userscript. It supports bilingual webpage translation, input-field translation, selection word lookup, and mouse-hover translation, and includes YouTube bilingual subtitles with configurable subtitle styles. It lists built-in services such as Google, Microsoft, Baidu, Tencent, DeepL, OpenAI, Gemini, Claude, Ollama, and DeepSeek. The README notes that provider plugins, Local AI, file translation, and automatic clipboard translation are available only in the Chrome/Edge and Firefox extension builds, not in userscripts and other clients.
Kutt is a free, open source modern URL shortener. It supports custom domains, link management, usage statistics, an API for programmatic access, and offers browser extensions for Chrome and Firefox, with options to self-host the service.
Land Lines is a Chrome experiment that lets users explore real Google Earth satellite imagery through gesture. Drawing finds satellite images matching a line, while dragging creates an infinite line of connected rivers, highways and coastlines. It runs in a phone or desktop browser without backend servers using machine learning and WebGL.
LanguageTool is an AI-based grammar, spelling, and punctuation checker that works in over 30 languages. It offers a paraphraser that rewrites sentences to be more fluent, formal, or shorter, and a browser add-on for Chrome, Firefox, Edge, and Safari. A Premium tier provides more style checks and paraphrasing.
Lazy Tabs is an open source Chrome extension that discards inactive tabs to speed up browser startup and lower memory usage. Discarded tabs keep their title, favicon and position, and are left alone if pinned. It requests no permissions and performs no tracking. Discarding happens at startup, on icon click, or when several tabs are recreated in a burst.