Underrated Open-Source Chrome Extensions I Recommend
Created at October 10, 2025 • Updated 10/10/2025
Skip the mainstream picks—these underrated open-source Chrome extensions quietly boost your productivity, privacy, and workflow without the bloat.
https://www.21oss.com//curated/underrated-open-source-chrome-extensions-i-recommendLink Copied!
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BroKarim
@BroKarim
GitOwl Extension is a browser extension that enhances GitHub's code review experience with AI-powered insights and analysis. It integrates directly into GitHub's interface to provide intelligent code suggestions, detect potential issues, and streamline the review process. Designed for developers and teams who want to improve code quality and accelerate their review workflows with automated assistance.
Tech Stack:
1 / 2
Details:
Stars
39Forks
6Last commit
1 year agoRepository age
3 yearsLicense
Apache-2.0
Fetched from GitHub .
Page Assist is a browser extension that brings AI-powered assistance directly into your web browsing experience. It allows users to interact with various AI models to summarize web pages, answer questions about content, and get contextual help while browsing. The tool supports multiple AI providers and models, offering flexibility for different use cases. Designed for users who want to enhance their productivity and comprehension while browsing the web, Page Assist integrates seamlessly into the browser to provide instant AI-powered insights without leaving the current page.
Tech Stack:
1 / 2
Details:
Stars
7,439Forks
686Last commit
3 days agoRepository age
3 yearsLicense
MIT
Fetched from GitHub .
daily.dev is a professional network for developers that curates and delivers personalized tech news, articles, and content from hundreds of sources. It aggregates content from top developer publications, blogs, and communities, using AI and community engagement to surface the most relevant articles for each user. Available as a browser extension, progressive web app, and mobile app, it helps developers stay updated with the latest in tech without the noise, featuring customizable feeds, bookmarking, discussions, and a reputation system that rewards quality contributions.
1 / 2
Details:
Stars
19,676Forks
554Last commit
2 months agoRepository age
8 yearsLicense
AGPL-3.0
Fetched from GitHub .
Lighthouse is an open-source, automated tool developed by Google Chrome for improving the quality of web pages. It runs comprehensive audits against web pages, analyzing performance, accessibility, progressive web apps, SEO, and best practices. Lighthouse generates detailed reports with actionable recommendations to help developers optimize their websites. The tool can be run in multiple ways: from Chrome DevTools, from the command line, as a Node module, or through web interfaces. It provides metrics like First Contentful Paint, Speed Index, Time to Interactive, and Cumulative Layout Shift, making it essential for web performance optimization. Lighthouse is widely used by developers, QA teams, and DevOps engineers to ensure web applications meet modern standards. It integrates seamlessly into CI/CD pipelines, enabling automated quality checks during development and deployment processes.
Tech Stack:
1 / 2
Details:
Stars
29,711Forks
9,634Last commit
2 days agoRepository age
10 yearsLicense
Apache-2.0
Fetched from GitHub .
Passbolt is a secure, open-source password management solution designed specifically for team collaboration. It enables organizations to safely store, share, and manage credentials across teams while maintaining end-to-end encryption. Built with a focus on security and privacy, Passbolt uses OpenPGP encryption to ensure that passwords remain encrypted on the client side before being stored on the server. The platform offers features like role-based access control, password sharing workflows, audit logs, and browser extensions for seamless integration. Ideal for development teams, IT departments, and organizations that need to manage shared credentials securely while maintaining compliance and transparency.
Tech Stack:
1 / 2
Details:
Stars
5,574Forks
360Last commit
24 days agoRepository age
10 yearsLicense
AGPL-3.0
Fetched from GitHub .
Requestly is a powerful HTTP interceptor and debugging tool that allows developers to modify network requests and responses without changing code. It enables users to redirect URLs, modify headers, insert custom scripts, throttle network speeds, and mock API responses directly from the browser. Popular among frontend developers, QA engineers, and API testers for debugging production issues, testing edge cases, and simulating various network conditions without backend changes.
Tech Stack:
1 / 3
Details:
Stars
6,068Forks
547Last commit
16 hours agoRepository age
9 years
Fetched from GitHub .
Screenity is a powerful, free screen recorder and annotation tool designed for work, education, and creative collaboration. It enables users to record their screen, webcam, and microphone while adding real-time annotations, making it ideal for creating product demos, tutorials, presentations, and team feedback. Built with privacy in mind, it imposes no time limits or watermarks. Integrates AI-powered features via TensorFlow for enhanced interactivity and usability.
Tech Stack:
1 / 2
Details:
Stars
17,783Forks
1,427Last commit
2 days agoRepository age
5 yearsLicense
GPL-3.0
Fetched from GitHub .
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