Online system and network discovery
https://archive.org/ https://netlas.io/ https://wigle.net/ https://hunter.io/ https://ping.eu/ https://www.exploit-db.com/ https://mxtoolbox.com/ https://www.shodan.io/ https://search.censys.io/ https://nmap.online/ https://urlscan.io/
Online malware analysis website
https://app.any.run/ https://www.hybrid-analysis.com/ https://sandbox.pikker.ee/ https://analyze.intezer.com/ https://www.virustotal.com/ https://www.joesandbox.com https://www.filescan.io/scan