SiteCheckerTool.com - Website Analytics & Tools
Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
SiteAuditTool.com - Generate Website Audit Reports
WebGazer - Monitor your website's availability with WebGazer, review its performance and get instant notifications when your website goes down. No installation required and free plan available.
AnalyzeSiteTool.com - Website Analyzer Tools
Checkify - Super minimal, simple and inexpensive 24/7 uptime monitoring