ShieldDesk

Achilleus

From $27/mo

Website security scanner for freelancers managing client domains. Monitors SSL, security headers, and email authentication with scheduled scans and PDF reports.

DMARCTrust

Price not tracked

DMARC email authentication monitoring and management platform with SPF/DKIM alignment checks, threat analysis, and compliance reporting for domain security.

DomainRisk.io

From $29/month

Domain security monitoring covering WHOIS, DNS, SSL, email auth, and subdomain discovery.

DomainOptic

From $9/mo

Domain security audit tool that scans SSL, DNS, headers, secrets, and blacklists with AI-powered domain generation.

TalonWatch

From $19.99 one-time

Website security scanner that checks security headers, certificate transparency, public GitHub credentials, file exposure, debug endpoints, and client-side code. Surface scan is free; deep scan with active probing is paid.

Cont3xt

From $10/mo

Threat intelligence enrichment platform for security analysts that automates pivot lookups across dozens of OSINT sources for IPs, domains, hashes, and email indicators.