QuietGlass vs Kuku: open source
Side-by-side comparison of features, pros & cons, pricing, and community votes (2026).
🏆 QuietGlass leads with 82 upvotes
Screen privacy for your Mac, with or without AirPods
QuietGlass is a free, open-source Mac application designed to enhance screen privacy effortlessly. It offers users the ability to blur or hide specific areas of their screen, protecting sensitive information from prying eyes. Unique features include integration with AirPods for look-away privacy and camera-based alerts that detect when someone else is in view, prompting you to take action or automatically blurring the screen. Built with native Swift code and optimized for macOS 14+, QuietGlass provides smooth performance and seamless privacy controls, including focus mode for active window clarity and owner recognition to ensure only you can disable protections. Its compatibility with notch controls makes it well-suited for modern MacBooks, offering a comprehensive privacy solution for professionals, remote workers, and anyone concerned about screen security.
Pros
- Open-source and free, offering transparency and community support
- Advanced privacy features like camera-based face detection and owner recognition
- Native Swift implementation ensures smooth performance on macOS 14+
- Supports specific areas and window focus modes for tailored privacy
- Integrates with AirPods for look-away privacy when needed
Cons
- Limited to macOS 14+ and Mac hardware, reducing compatibility with older systems
- Features may require some configuration for optimal use
- Currently lacks extensive user documentation or community resources
Best for
- • Securing sensitive work data during video calls or screen sharing
- • Protecting confidential information when working in public or shared spaces
- • Automatically blurring private windows or text during screen recordings
- • Using AirPods to discreetly look away from the screen during meetings
Pricing: Pricing not verified
Your open-source, local second brain for every AI
Kuku is an open-source, local-first second brain designed for the AI era, emphasizing user control and privacy. It stores knowledge in plain Markdown files, making it portable and easy to manage across different tools and setups. Kuku enhances knowledge management with features like wikilinks, backlinks, graph visualization, powerful search, and AI-assisted editing with reviewable diffs. This combination allows users to build a personalized, interconnected knowledge base that remains accessible and adaptable, whether self-hosted or integrated with various AI models. Unlike proprietary note-taking apps or ephemeral AI chat services, Kuku prioritizes data ownership and flexibility, making it ideal for power users, researchers, and those seeking a customizable, offline knowledge system.
Pros
- Open-source and self-hostable, ensuring data privacy and customization
- Plain Markdown file storage guarantees portability and longevity of knowledge
- Rich interconnected features like wikilinks, backlinks, and graph view facilitate deep knowledge organization
- AI-assisted editing enhances productivity and content refinement
- Designed for cross-tool compatibility and knowledge portability
Cons
- May require technical skills for setup and maintenance
- Less polished UI compared to commercial note-taking apps
- Limited integrations out-of-the-box, possibly needing configuration
Best for
- • Building a personal second brain for long-term knowledge retention
- • Research management and academic note organization
- • Knowledge sharing within small teams or communities
- • AI training data curation and management
Pricing: Kuku is open-source and free to use, with no subscription fees. Users can self-host at no cost, though additional hosting or customization might incur expenses; commercial support or hosting services could have separate pricing.