Open source
Nuclei
Open source scanner that runs vulnerability checks from templates
Web ScanningTemplate based vuln scanner
Alternatives to testssl.sh
12 tools like testssl.sh, chosen by what they do. About testssl.sh
Curated
Detectify
Cloud scanner for exposed assets, APIs and web applications
Web ScanningAttack surface scanner
Freemium
Freemium
Shodan
Search engine that indexes internet-connected devices and services
Web ScanningSearch engine for devices
Curated
StackHawk
Security testing for running apps, with fixes from coding agents
Web ScanningDeveloper first DAST
Free
Let's Encrypt
Free, automated TLS certificates to enable HTTPS on your sites
Web SecurityFree HTTPS certificates
Freemium
Burp Suite
Web security testing toolkit for manual and automated scanning
Pentest and BountyWeb security testing toolkit
Open source
Semgrep
Scans source code and dependencies for security issues
Code SecurityFast code security scanning
Open source
OSV-Scanner
Finds known vulnerabilities in your project's dependencies
Code SecurityGoogle open source scanner
Open source
Nmap
Free, open source network scanner for hosts, ports and services
Pentest and BountyNetwork discovery scanner
Free
Have I Been Pwned
Check if your email or password appeared in a known data breach
Web SecurityCheck for data breaches
Open source
Grype
Open source CLI that finds known vulnerabilities in container images
Cloud SecurityFast vulnerability scanner