Suprvise is a real-time health monitoring and errors tracking dashboard.
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.
Backlinks by Neil Patel - A backlinks research tool for competitive intelligence
Monitority - Simple website monitoring service (sms/email alerts)
Backlink Tool - A backlink tool to index your links quickly and freely.
Hyperping - Cheap uptime and performance monitoring with detailed reporting and flexible alerting
Monitor Backlinks - Easy Link Management - SEO Tool for automatically checking your backlinks.