eSoftware PC Booster is a performance enhancement tool that focuses on optimizing system speed and stability. It works by cleaning up junk files, fixing registry errors, and managing system resources to ensure smoother operation. With features like startup optimization, memory management, and real-time system monitoring, it helps reduce lags and improve overall PC performance. The tool is designed to provide users with a faster, more responsive computing experience by addressing common issues that slow down PCs over time.