A comprehensive guide to system design, helping you ace big tech interviews with included flashcards.

A Microsoft open-source Python tool that quickly converts common files like PDF, Word, and Excel to Markdown, specifically designed for AI model consumption.

Union is a secure bridge connecting different blockchains, using zero-knowledge proofs to transfer assets and data without trusting third parties.

A free debugging tool designed for Windows to help you analyze software without source code, suitable for virus scanning or studying internal program principles.

A Windows desktop utility that displays network speed, CPU, and memory usage in a floating window, with skin support.

A free and open-source screen recorder that creates product demo videos with zoom effects like Screen Studio, without watermarks and free for commercial use.

A self-hosted tool that automatically skips ads and intros on YouTube TV apps, supporting Apple, Samsung, Android TVs and more.

This is a free live TV app designed for TV boxes, directly calling official live sources, supports remote control channel switching, no need to install complex software, suitable for users who want to watch CCTV and satellite on large screens.

A PHP library that automatically identifies whether visitors are using a phone, computer, or tablet, along with specific browser and system models, handling device detection for you.

An AI toolkit for architects to automate governance, vendor procurement, and design reviews, keeping documents and workflows organized.