WUD (Windows Updater Downloader) is a self-hosted web-based application designed to facilitate the downloading, caching, and distribution of official Windows and Microsoft Office updates. By acting as a local repository for Windows updates, WUD helps reduce bandwidth usage and speeds up update deployments across multiple devices in a network. It offers a clean, user-friendly interface that allows users to browse, search, and download individual update files or complete update packages, making it ideal for system administrators and power users who prefer to manage updates manually or in environments with limited internet connectivity. WUD supports a wide range of Windows versions and Office products, ensuring comprehensive coverage for various Microsoft software updates.