theHarvester is a very simple to use, yet powerful and effective tool designed to be used in the early stages of a penetration test or red team engagement. Use it for open source intelligence (OSINT) gathering to help determine a company's external threat landscape on the internet. The tool gathers emails, names, subdomains, IPs and URLs using multiple public data sources.
Web-based OSINT tool for investigating phone number information
...Users can select specific investigation features to run individually or execute all available checks at once depending on their needs. Moriarty Project operates through a browser-based interface and includes multithreading improvements that help speed up the investigation process. Moriarty Project focuses strictly on OSINT-style information gathering and does not provide tracking, hacking, or harmful capabilities against phone number owners. It is fully open source, allowing users to inspect the code and understand how the data collection mechanisms work.