Nmap
Description: Nmap is an open source network discovery and security auditing tool. It is used to discover hosts and services on a network and to detect potential vulnerabilities.
Type: software
Pricing: Free
vtop
Description: vtop is an open-source, cross-platform interactive monitoring tool for Linux/Unix systems. It provides a real-time view of system resources like CPU, memory, disks, network usage, and active processes.
Type: software
Pricing: Open Source