WinUtil is a free utility developed by Chris Titus that simplifies the setup process for new computers running Windows. It allows users to install multiple applications with a few clicks, featuring a user-friendly interface divided into five tabs: Software Installation, Tweaks, Config, Updates, and Microwin. Users can select desired software, make system adjustments, configure Windows preferences, manage update installations, and create customized Windows installers. The tool supports exporting application collections and tweaks for easy replication on other computers, and comprehensive documentation is available for further exploration of its features.