Vulnerability Scanners

List of both free and paid vulnerability scanners

Qualys

Nexpose

OpenVAS (Open Vulnerability Assessment System)

https://github.com/greenbone/openvas-scanner

Self hosted

Nikto https://github.com/sullo/nikto

Web server scanner

Wapiti https://github.com/wapiti-scanner/wapiti

Web vulnerabilty scanner

Free and Open Source

Paid

Holm Security

https://www.holmsecurity.com/