Nikto is an Open Source software written in Perl language that is used to scan a web-server for the vulnerability that can be exploited and can compromise the server.
Features
Full support for SSL
Finds sub-domain
Supports full HTTP Proxy
Outdated component report
Result saved in multiple format (xml, csv etc)
Username guessing
Gives details of installed software
Takes Nmap file as input to scan port in a web-server.