NakedSSL - Hassle-free SSL clothes for your naked domains.
SSL Alerts - Free service to send SSL certificate expiration alerts
TinyCert - Free SSL certificates for your startup.
Virusdie - All-in-One cloud-based, simple, powerful and gorgeous website security tools built for everyone.
Indusface AppTrana - AppTrana offers continuous website security with web application scanning, web application firewall, CDN and DDoS protection.
CertSimple - EV SSL certificates delivered in hours, not days