testssl.sh vs SSLyze: 2026 Comparison
testssl.sh is a free security scanning tool. SSLyze is a free security scanning tool. Compare features, ratings, integrations, and community reviews side by side to find the best security scanning fit for your security stack.
CST VerdictBased on our analysis of available product data, here is our conclusion:
DevOps and security teams running their own infrastructure will move fastest with testssl.sh because it gives you certificate and protocol results in seconds without any agent, UI, or account overhead. Its 8,956 GitHub stars reflect real adoption; the tool handles STARTTLS, custom ports, and serialized testing across thousands of endpoints in a single bash loop. Skip this if you need continuous monitoring, automated remediation, or a dashboard that executives will understand; testssl.sh is a command-line scanner you run on-demand, not a compliance platform.
DevSecOps teams and infrastructure engineers running continuous SSL/TLS scanning in CI/CD pipelines should use SSLyze for its speed and programmatic simplicity; it scans a server in seconds and integrates via Python library without requiring a separate agent or UI. With 3,740 GitHub stars and active maintenance, it's the go-to for teams that need fast, repeatable certificate and protocol validation without payload. Skip this if you need a GUI-first tool or historical trend analysis across your entire certificate estate; SSLyze is built for point-in-time scans, not compliance dashboards.
