Alternatives to Hardenize
A web site configuration tester and monitoring service for network, certificate and security settings. The listings below can replace it for an important use case. Each note says what changes if you switch.
The original
Hardenize
A web site configuration tester and monitoring service for network, certificate and security settings.
Replacements
Listings that take over the same core job as Hardenize.
Internet.nl
A web test that checks websites, mail domains and connections for modern Internet standards support.
Internet.nl is free and tests website, email and connection setup for IPv6, DNSSEC, TLS, DMARC, DANE and RPKI, and can be self-hosted, but offers no continuous monitoring.
SSL Labs Server Test
A Qualys web service that analyses the TLS/SSL configuration of a public web server.
SSL Labs Server Test gives a detailed TLS audit of protocols, ciphers and vulnerabilities with a letter grade, but covers public web servers only without ongoing monitoring.
HTTP Observatory
Mozilla's web tool that grades a site's HTTP security headers and gives fix recommendations.
HTTP Observatory is Mozilla's free tool grading security headers such as CSP and HSTS with recommendations tied to MDN documentation, rather than certificates or network settings.
Check Your Website
Free online checker for a domain's DNS, redirects, certificates, connections and mixed content.
Check Your Website is free and reports on DNS, redirects, certificates and mixed content with A+ grading, though checks are queued with a limit on concurrent runs.
ImmuniWeb SSL Security Test
A free online test of the SSL/TLS setup of a web or email server.
ImmuniWeb SSL Security Test is free and tests web and email server TLS with PCI DSS, HIPAA and NIST compliance checks and PDF export, without certificate monitoring.
Security Headers
A web service that analyses a site's HTTP response headers and grades them from A+ to F.
Security Headers gives a shareable A+ to F grade for HTTP response headers with an API, but covers headers only and lists scans publicly unless hidden.
Web Check
Open-source, self-hostable tool that analyses a website's DNS, security, headers and other public details.
Web Check is open source and self-hostable with Docker, combining DNS, headers and security checks in one report, without organisation-wide certificate monitoring.
Cert Spotter
A hosted Certificate Transparency monitor that alerts on unauthorized, expiring and invalid SSL certificates for your domains.
Cert Spotter replaces only the certificate monitoring part, alerting on new, expired or misinstalled certificates through Certificate Transparency logs, and is paid after a 30-day trial.
Also worth comparing
These listings name Hardenize as their own alternative, so the relationship runs both ways.
CDN77 TLS Test
A free web checker from CDN77 that lists the SSL and TLS versions a server supports.
Hardenize gives a free public configuration report covering TLS, certificates and security settings, with monitoring aimed at organisations.
CryptCheck
A web tool that checks the TLS configuration of HTTPS, SMTP and XMPP servers.
Hardenize tests network, certificate and security configuration for a domain and adds continuous monitoring aimed at organisations.
GF.dev TLS Cipher Suite Scanner
A free web tool that reports the TLS version and cipher suite a server negotiates.
Hardenize gives a free public configuration report covering network, certificate and security settings, and adds continuous monitoring aimed at organisations with little public pricing detail.
SSLyze
Open-source command-line scanner and Python library that analyzes a server's SSL/TLS configuration.
Hardenize is a hosted freemium service with a public configuration report and ongoing certificate monitoring, replacing local scanning with a vendor service.
testssl.sh
A free command-line tool that checks a server's TLS/SSL ciphers, protocols and cryptographic flaws.
Hardenize is a hosted freemium tester with a public configuration report and continuous certificate monitoring for organisations, instead of a local script.
TrackSSL
A hosted service that monitors SSL/TLS certificates and sends alerts before they expire or change.
Hardenize adds continuous certificate and perimeter monitoring alongside network and security configuration reports, aimed at organisations, with little public pricing detail.
Similar software
Related functionality, not a direct replacement.
Webbkoll
A web-based privacy checker for cookies, third-party requests, HTTPS and security headers.
Zonemaster
An open-source DNS validation tool that checks a domain's delegation and zone for configuration errors.
HSTS Preload List Submission
A web tool to check a domain's HSTS preload status and submit it for inclusion.
