PRTG is a network monitoring tool that helps you to ensure that your computer systems are running smoothly and that no outages occur. Developed by Paessler AG
License: Freemium
PRTG Network Monitor is a commercial product known for its user-friendly interface and comprehensive monitoring capabilities, making it suitable for large networks. In contrast, LibreNMS is an open-source solution that offers high customization and community support, but can be more challenging for beginners.