XSSSNIPER is an handy xss discovery tool with mass scanning functionalities.

Usage:

Usage: xsssniper.py [options]

Options:
  -h, --help            show this help message and exit
  -u URL, --url=URL     target URL
  --post                try a post request to target url
  --data=POST_DATA      post data to use
  --threads=THREADS     number of threads
  --http-proxy=HTTP_PROXY
                        scan behind given proxy (format: 127.0.0.1:80)
  --tor                 scan behind default Tor
  --crawl               crawl target url for other links to test
  --forms               crawl target url looking for forms to test
  --user-agent=USER_AGENT
                        provide an user agent
  --random-agent        perform scan with random user agents
  --cookie=COOKIE       use a cookie to perform scans
  --dom                 basic heuristic to detect dom xss

Examples:
Scanning a single url with GET params:

$ python xsssniper.py -u "http://target.com/index.php?page=test"

Scanning a single url with POST params:

$ python xsssniper.py -u "http://target.com/index.php" --post --data=POST_DATA

Crawl a single url looking for forms to scan:

$ python xsssniper.py -u "http://target.com" --forms

Mass scan an entire website:

$ python xsssniper.py -u "http://target.com" --crawl

Mass scan an entire website forms included:

$ python xsssniper.py -u "http://target.com" --crawl --forms

Analyze target page javascripts (embedded and linked) to search for common sinks and sources:

$ python xsssniper.py -u "http://target.com" --dom