theharvester
A tool designed to be used in the early stages of a penetration test.
TLDR
Gather information on a domain using Google
$ theHarvester --domain [domain_name] --source google
Gather information on a domain using multiple sources
$ theHarvester --domain [domain_name] --source [google,bing,crtsh]
Change the limit of results to work with
$ theHarvester --domain [domain_name] --source [google] --limit [200]
Save the output to two files in XML and HTML format
$ theHarvester --domain [domain_name] --source [google] --file [output_file_name]
Output all available options
$ theHarvester --help