Secure My Website - A pain-free service to add SSL to your site, for non-geeks
UptimeRobot - Free Website Uptime Monitoring
Virusdie - All-in-One cloud-based, simple, powerful and gorgeous website security tools built for everyone.
Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
Indusface AppTrana - AppTrana offers continuous website security with web application scanning, web application firewall, CDN and DDoS protection.
UptimeRobot App - Web, SSL, ports & Cron-jobs monitoring