Alternatives to DigiCert SSL Installation Checker

A DigiCert web tool that diagnoses TLS/SSL certificate installation problems on a server. The listings below can replace it for an important use case. Each note says what changes if you switch.

Replacements

Listings that take over the same core job as DigiCert SSL Installation Checker.

  • SSL Shopper SSL Checker

    An online checker that verifies a server's SSL certificate installation, chain, hostname and expiry.

    FreeProprietaryWeb

    SSL Shopper SSL Checker checks chain, hostname and expiry and flags old hash functions, with optional expiry reminders and certificate advertising on the page.

  • Decoder.link SSL Checker

    An online SSL checker that validates a server's certificate installation, with SNI and STARTTLS support.

    FreeProprietaryWeb

    Decoder.link SSL Checker adds SNI and STARTTLS support on any port and a bulk checker for several hosts, also from a certificate seller's site.

  • SSL Labs Server Test

    A Qualys web service that analyses the TLS/SSL configuration of a public web server.

    FreeProprietaryWeb

    SSL Labs Server Test gives a full protocol and cipher audit with a letter grade rather than only diagnosing certificate installation.

  • ImmuniWeb SSL Security Test

    A free online test of the SSL/TLS setup of a web or email server.

    FreeProprietaryWeb

    ImmuniWeb SSL Security Test audits full TLS setup of web and email servers with PCI DSS, HIPAA and NIST checks and PDF export.

  • testssl.sh

    A free command-line tool that checks a server's TLS/SSL ciphers, protocols and cryptographic flaws.

    FreeOpen sourcemacOSLinuxCommand line

    testssl.sh is an open-source command-line script run from your own machine that checks ciphers, protocols and flaws on any port.

Similar software

Related functionality, not a direct replacement.

  • TrackSSL

    A hosted service that monitors SSL/TLS certificates and sends alerts before they expire or change.

    FreemiumProprietaryWeb

  • Cert Spotter

    A hosted Certificate Transparency monitor that alerts on unauthorized, expiring and invalid SSL certificates for your domains.

    PaidProprietaryWeb

  • CAA Test

    A web tool that checks the DNS CAA records published for a domain.

    FreeProprietaryWeb

  • CDN77 TLS Test

    A free web checker from CDN77 that lists the SSL and TLS versions a server supports.

    FreeProprietaryWeb

  • Hardenize

    A web site configuration tester and monitoring service for network, certificate and security settings.

    FreemiumProprietaryWeb

  • crt.sh

    A free web search engine for certificates recorded in public Certificate Transparency logs.

    FreeProprietaryWeb