intoDNS
Description: intoDNS is a free online tool that provides DNS report and checks to help identify potential issues with your domain's DNS records. It analyzes DNS configuration and identifies possible misconfigurations.
Type: software
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