wwwscan is a very good free website security scanner tools,It can help you improve your website security level,hope it can help you.

<Usage>:  wwwscan <HostName|Ip> [Options]
<Options>:
          -p port        : set http/https port
          -m thread      : set max thread
          -t timeout     : tcp timeout in seconds
          -r rootpath    : set root path to scan
          -ssl           : will use ssl
<Example>:
          wwwscan www.target.com -p 8080 -m 10 -t 16
          wwwscan www.target.com -r "/test/" -p 80
          wwwscan www.target.com –ssl

You can download it from here.