Description: HackerTarget.com is a free online web application security scanner and network security scanner. It can scan websites for vulnerabilities, check network security, test SSL encryption and perform many other security assessments.
Type: software
Description: Nagios is an open-source monitoring system that allows administrators to monitor network infrastructure like servers, switches, applications, and services. It can notify users when issues arise and help identify problems in a timely manner.
Type: software
Pricing: Open Source