More than 7 billion assets have been identified through active detection of global Internet assets. Additionally, 350,000 fingerprint rules have been accumulated. This allows for the identification of most software and hardware network assets. Asset data can be used to support external presentation and application in many ways and can perform hierarchical portraits based on IP.
Shodan - Shodan is the world's first search engine for Internet-connected devices.
ZoomEye - Network mapping service
Armitage - Armitage makes penetration testing easy by adding a GUI to the Metasploit framework
Censys - Censys helps organizations, individuals, and researchers find and monitor every server on the Internet to reduce exposure and improve security.
IVRE - Network recon framework, including a web interface to browse Nmap scan results.
Netlas.io - Internet intelligence apps that provide accurate technical information about IP-addresses, domain names, web-sites, web-services, IoT-devices and other online assets.