CurateClick

A web-based tool for testing internet connection speed, providing quick and accurate results.

A modern remake of the classic Tetris game, playable directly in the browser without downloads. Features three modes (Classic, Crazy, Time Attack) and global leaderboards.

OpenDerisk is an AI-native risk intelligence system designed as a 7x24H AI digital operations assistant (AI-SRE). It provides deep monitoring and protection for application systems through multi-agent collaboration, deep root cause analysis (RCA), and visual evidence chains. The system is fully open-source and leverages large datasets for dynamic problem diagnosis.

A Chrome extension that enhances Picture-in-Picture functionality with bilingual subtitles, thumbnail previews, and danmaku support for over 200 video platforms, ideal for language learning and multitasking.

A website offering over 6000 VALORANT crosshair codes (continuously updated) and a custom crosshair generator tool.

An AI tool that summarizes and extracts insights from Ruan Yifeng's weekly tech enthusiast newsletters using large language model APIs.

GitHub Card is an online tool that transforms GitHub user profiles into visually appealing personal cards. It uses OAuth to fetch GitHub data and generates customizable cards with contribution stats, language analysis, and more. Users can download images or share links, and it includes a developer ranking feature.

Quick Sign is an online signature application that allows users to sign documents remotely. It supports uploading documents, setting signature positions, generating shareable links or QR codes, and sending signed documents to specified emails. Ideal for signing reimbursement forms, contracts, and IOUs without physical presence.

A free, open-source online tool for creating Open Graph images, Twitter/X headers, and blog cover images. No registration required, with professional templates and instant preview.

Affordable GPT4o drawing API priced at 0.02 yuan per image, providing stable service and cost reduction.

A learning-oriented 3D Gaussian Splatting project implemented from scratch using NVIDIA Warp. Runs on both CPU and GPU without CUDA dependencies, featuring clean code and simplified structure ideal for graphics beginners.

An article introducing the /proc directory in Linux, explaining its significance and usage.