The Skip Tracing Framework, online information including:

Domain name (DNS Information, Website information, Machine specific, company services in the cloud…)
IP addresses or network range Information(
Search information about company name
Full name, surname search tools
Email addresses of the target
Phone numbers that you can use for social engineering
Nickname search and information
Passwords hash online tools
Images reversing tools
URL information
Specialized search engines.

Info
http://makensi.es/stf/