Panda Free Antivirus software is a lightweight and easy-to-use antivirus program that offers real-time protection against all types of malware. Its most important features include a behavioral analysis engine that detects and blocks threats in real-time, a USB protection tool that scans external devices for malware, and a rescue kit that can be used to create a bootable USB drive to remove stubborn infections. Additionally, Panda Free Antivirus offers a simple and intuitive user interface, making it an ideal choice for novice users.