Top Free OSINT Tools | Scan Everything!" from the YouTube channel "iMentor" discusses the use of open-source intelligence (OSINT) tools for cybersecurity purposes. The video highlights three specific tools: GitHub Dog Search, which can be used to find sensitive information in GitHub repositories, Instagram OSINT tool, which can extract data from Instagram accounts like email addresses and phone numbers, and LinkedIn OSINT tool, which retrieves information from LinkedIn profiles and companies. The video emphasizes that these tools are not just for spying, but for protecting users and preventing cyberattacks.