Acunetix - Audit your website security and web applications for SQL injection, Cross site scripting and other...
Shodan - Shodan is the world's first search engine for Internet-connected devices.
PracticeProtect - Network security & identity management
Intruder - Intruder is a security monitoring platform for internet-facing systems.
Invicti (formerly Netsparker) - Netsparker Security Scanner is a simple-yet-powerful web-based security scanner that automatically identifies XSS, SQL Injection, and all the other vulnerabilities and security flaws in sites, web apps, and web services.
HTTPCS Security - Cyber security solution for protecting websites and web apps