Аnalyzing Telegram chats and finding correlations between people

BibaAndBoba is a tool for analyzing files containing Telegram chat history.
Sherloq-Forensic Image Analysis

open source image forensic toolset
Youtube comment finder

How to search by Youtube commeny
Netlas.io – new analog of Shodan

Internet intelligence apps that provide accurate technical information on IP addresses
HOW TO HIDE A FILE IN AN IMAGE

The program which is encrypts the data and camouflage it as an image
Guide to Digital Forensics

Digital Forensics Guide covering applications, libraries and tools that will make you a better and more efficient
ARGOS – OSINT built in workstation

ARGOS – how to prepare OSINT built in workstation
SpyScrap

OSINT tool to recolect information from Google, Tinder, Twitter and more
BELATI

Belati – The Traditional Swiss Army Knife For OSINT
GVNG Search

Toolkit for gathering personal information