ToolHover: A Privacy-First Open-Source Web Toolkit for Developers and Researchers

ToolHover is a modern, privacy-focused web application that provides a comprehensive collection of free online utilities for developers, designers, researchers, and content creators. Built with Next.js 15 and deployed as a static site, the platform emphasizes client-side processing to ensure user privacy and data security. This paper presents the architecture, implementation details, and evaluation of ToolHover, which achieved #107 ranking out of 400+ projects on Product Hunt, demonstrating significant community validation. The project addresses the growing need for privacy-respecting online tools in an era of increasing data collection concerns.