TLSCanary

TLSCanary is a web + desktop agent that continuously tests your real-world TLS posture from multiple networks and client profiles, then alerts you when something will break. Instead of generic “SSL monitoring,” it simulates actual handshakes across TLS versions, cipher suites, SNI/ALPN, OCSP stapling, certificate chains, and common middlebox behaviors. It flags regressions caused by load balancer changes, CDN config tweaks, expired intermediates, misordered chains, and strict client updates (mobile OS/browser). You get a timeline of handshake diffs, a reproducible “curl/openssl recipe,” and a plain-English root-cause guess with confidence levels. It’s not magic: it won’t fix your PKI for you, but it will drastically shorten the time between a bad change and a clear, actionable diagnosis. Pricing targets teams that can’t afford outages but don’t want a full-blown enterprise observability suite.