The best free open source website change detection and restock service
Tiny status page generated by a Python script
Track changes on websites via git
Status Page for monitoring your websites and applications
A Discord bot that alerts you when a website changes
Enterprise-level websites monitoring system
Windows app for web page content changes detection
HTTP Monitor plugin for graylog
Monitoring the availability of URL's
A website monitoring/health-checking tool
Monitoring of websites with spider and email notifications