Almost everything is free, so gather any info you need for your daily doze of hacking, but beware thought, MOST OF THESE WEBSITES ARE NSFW.
Facebook Digging …
https://inteltechniques.com/intel/OSINT/facebook.html
http://netbootcamp.org/facebook.html
http://socialsearching.info/#/fb
The hidden Wiki http://thehiddenwiki.org/
Search The Tor Network without the browser bundle https://onion.cab/
Search for Tor hidden services https://ahmia.fi/
Access Tor Sites, Onion LInks http://www.onion.link/
Human Trafficking Intelligence http://www.rescueforensics.com/
Custom Email Searches https://inteltechniques.com/intel/OSINT/email.search.html
Addresses, email, Zip, Users, phone, people, license plates etc … reverse searches http://www.reversegenie.com
Ip, Domain History, Alexa, Reverse IP, Port scan, Traceroute, Similar Web, SEMrush, Site Analytics, Same ID, SpyonWeb,DomainCrawler, Nerdy Data,Robots.txt, Censys, Threat Cow, Whoisology, https://inteltechniques.com/intel/OSINT/domain.search.html
Custom IP address search https://inteltechniques.com/intel/OSINT/ip.search.html
Custom Document Search https://inteltechniques.com/intel/OSINT/docs.html
Document Search By format https://inteltechniques.com/intel/OSINT/docs.format.html
100 pastebin type sites with search engine for all 100 https://inteltechniques.com/intel/OSINT/pastebins.html
Instagram Searches, GPS data, identify target followers etc etc … https://inteltechniques.com/intel/OSINT/instagram.html
Social Network Custom Image searches https://inteltechniques.com/intel/OSINT/images.html
Cellular email Assumption, Convert Cell numbers to possible emails https://inteltechniques.com/intel/OSINT/cellperm.html
Photo Meta Data search, Get Possible GPS coordinates, Camera Type, or search GPS coordinates by date to retrieve images from that location… https://inteltechniques.com/intel/OSINT/photos.html
Search Dating Networks https://inteltechniques.com/intel/OSINT/dating.networks.html
Display all email adresses for a domain.. example.. website.com yomomma.com https://emailhunter.co/
Massive list of Security, Privacy Links, Browser addons etc https://inteltechniques.com/hfti.links.html
Reverse Website Intel http://reverseinternet.com/ Twitter analytics http://twitter.analyzer.cc/
More then just reverse lookups on emails, Whoisology https://whoisology.com/#advanced
Website analytics, Traffic, location, Overview etc http://www.statscrop.com/www/inteltechniques.com
Youtube Video meta Data Viewer, GPS, Keywords etc http://www.amnestyusa.org/citizenevidence/
Skype IP Resolver http://www.skresolver.com/index.php
A search engine for Threats https://www.threatcrowd.org/
Archived Movies, videos https://archive.org/details/opensource_movies
Search for resumes with email adress https://inteltechniques.com/osint/emails.resumes.html
Find anyones email by name http://www.findanyemail.net/
Email Validator http://e-mailvalidator.com/index.php?page=home
Convert email to name https://thatsthem.com/reverse-email-lookup
reverse email to websites http://www.whoismind.com/
Find email adresses of businesses, users etc http://samy.pl/peepmail/elift.cgi
Check to see if your email was recently exposed, hacked http://breachorclear.jesterscourt.cc/
Find all email addresses that are registered to someone https://www.voilanorbert.com/# https://breachalarm.com/
Find out if a password hack has exposed your password online. Username search across 500 social networks http://knowem.com/
Another Username search engine http://usersherlock.com/
Display all addresses with a given number http://www.melissadata.com/lookups/zipnumber.asp
Find businesses, reverse phones, addresses http://dexknows.whitepages.com/person
Voter records http://www.blackbookonline.info/USA-Voter-Records.aspx