These are some good resources I came across during my study researches. It would be good if you could contribute down here with the discussion and bring us more resources.
All
Wifi - SIGINT Signal Intelligence
GEOINT - Geo location
Server search - IOT
Phone number
Leaks when using google dorks
Username
Domains
Emails
All For Email
Images - IMINT Image Intelligence
Create Fake Accounts
Hacking Activity Related -
All
Wifi - SIGINT Signal Intelligence
- https://wigle.net/ - Wifi Network geolocation mapper.
- Wifi map - app, database.
- WPS app - Wifi WPS brute force.
- WIFI analyzer - Analyse wifi, channel and speed around the user.
- http://gatewaysiec.anatel.gov.br - Signal antenna for Brazil
GEOINT - Geo location
- https://www.geocreepy.com/ - app, find geo location by social platforms.
- https://www.google.com.br/maps
- https://www.mapchannels.com/ - Joining multiple maps.
- https://www.arcgis.com - Many ways to see the world.
- https://www.mapillary.com/ - photos taken by users about the street.
- https://loc.alize.us/ - Flickr geolocation photos.
- https://www.omnisci.com/demos/tweetmap - tweets map
- http://geosocialfootprint.com/
- https://wigle.net/ - Wifi Network geolocation.
- https://livingatlas.arcgis.com/wayback/
- INMET - meteorology in real time.
- DPI INP - address by coordinate converter.
- flightradar24
- MarineTraffic
- Waze
Server search - IOT
- https://www.zoomeye.org/ - Chinese search engine, public data from exposed devices.
- https://www.shodan.io/
Phone number
- PhoneInfoga - python tool, many countries, VOIP.
- WhosCall - app, data by the users.
- https://www.truecaller.com - Find information provided by community.
- https://www.qualoperadora.net/
- https://tools.epieos.com/phone.php - Information about a phone number.
- https://numverify.com/
Leaks when using google dorks
- https://pastebin.com/ - pastebin
- https://anonpaste.org/ - Anonpaste, Secure alternative to pastebin.
- https://ghostbin.co/ - Ghostbin
- http://www.pastetext.net/
- pasthub
- slexy
- codepaste
- lodgeit
Username
- https://namechk.com/
- https://checkusernames.com/
- https://instantusername.com/
- Sherlock - python tool.
- https://loc.alize.us/ - Flickr geolocation photos.
Domains
- https://registro.br/
- https://www.iana.org/
- whois
- https://viewdns.info/
- dnsdumpster.com
- dnslystics.com
Emails
- https://tools.epieos.com/google-account.php - Google account finder.
- http://metricsparrow.com - Create many types of emails using name from any people.
- https://hunter.io/ - Search for domain, will bring many accounts from it.
- https://haveibeenpwned.com/ - Check if the email has been leaked.
- https://intelx.io/ <- leak
All For Email
Images - IMINT Image Intelligence
- https://www.google.com/imghp?hl=pt-BR - Search by image - google.
- https://www.bing.com/ - Bing has an improved engine.
- https://yandex.com/images/ - good engine for reverse image
Create Fake Accounts
Hacking Activity Related -
tart.me "OSINT"