Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
SiteCheckerTool.com - Website Analytics & Tools
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.
A1 Website Analyzer - Analyze websites and save data into XML, CSV etc. Extract data about internal linking and importance calculations, file sizes, download times, HTML validation errors etc. across entire websites.
Checkify - Super minimal, simple and inexpensive 24/7 uptime monitoring
SiteAuditTool.com - Generate Website Audit Reports