cutestat - Website Stats and Valuation. CuteStat.

Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting

WebsiteOutlook - WebsiteOutlook is an all-in-one website that provides you detailed information on famous websites based on various data sources like traffic, page rank, and estimated ad revenue.

UptimeRobot - Free Website Uptime Monitoring

Rankchart - Rankchart is one of the unique websites that allows you to examine your websites or watch competitors and locate rich information about website technologies, site reputation, errors, SEO, and ad-word recommendations.

UptimeRobot App - Web, SSL, ports & Cron-jobs monitoring