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November 21, 2025
Weekly Newsletter

Weekly Newsletter β˜•οΈ

Welcome to the newsletter edition of November 21st, where you receive the best-voted websites of the past week.

πŸ“° Top websites of the week

1. Google Antigravity

Google launched Antigravity this week, a new coding platform powered by their Gemini 3 model. Instead of just suggesting code, it can independently plan, write, test, and debug entire features. It has two interfaces: a standard code editor with AI assistance, and a workspace where AI agents can work across …

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2. SAM 3

Meta just dropped SAM 3 this week. It's a computer vision model that can find and segment objects in images and videos using plain textβ€”type "red baseball cap" and it'll automatically highlight every one in the scene. Previous versions only worked with clicks and boxes. They trained it on 270K …

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3. tweeks

Tweeks is a Chrome extension from Y Combinator's latest batch that lets you customize any website using plain English. Instead of writing custom JavaScript and CSS like you would with Tampermonkey, you just describe what you want in natural language and it generates and applies the changes for you. The …

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πŸŽ– Sponsored websites

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πŸ—ž More awesome websites this week

4. Disrupting AI Espionage - Anthropic

Anthropic caught Chinese state hackers using Claude in September. The hackers tricked the AI into thinking it was helping a legitimate cybersecurity firm do defensive testing, then used it to autonomously run attacks, finding vulnerabilities, writing exploits, stealing credentials, and organizing stolen data. The AI handled 80-90% of the work …

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5. ZeroGPT Plus

ZeroGPT Plus is a free AI Content Plagiarism Checker that doesn't require a login. It's designed to spot content created by AI tools like ChatGPT, Gemini, Claude, and Copilot. Using advanced technology, it checks texts against a large database to find signs that content might have been generated by AI. …

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6. Internet-in-a-Box

Internet-in-a-Box provides a miniature server that delivers an offline version of Wikipedia, making it accessible for those without reliable internet. It aims to improve public health and education in regions with limited connectivity.

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by @Micadep