ChangeTower
Monitor website changes, get alerts, archive full history. ChangeTower is a powerful website change detection and archiving platform. Set custom alert criteria, monitor and track website changes, get notified. Choose a URL to monitor for web page changes or set for archival. Our engines will crawl and capture a full-page visual screenshot, text-based content snapshot, and source code. Our powerful change monitoring network tracks changes to websites over time. We notify you when we detect a change matching your settings and record and archive a snapshot of your page automatically. Select a part of the page to monitor for visual changes, or choose to monitor for keywords, sentences, code updates, images and more. Create advanced sets of criteria to monitor for. You decide what element(s) of a web page to monitor, and when to send you change alerts.
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SiteOps
SiteOps monitors your Joomla, WordPress and PrestaShop sites 24/7: downtime, SSL certificates, DNS, WHOIS/domain expiry, SEO score, security, backups and server metrics.
Key features:
- Uptime checks every 30 seconds from 8 worldwide locations
- SSL/DNS/WHOIS monitoring with expiry alerts
- Security: HTTP headers, Safe Browsing, brute-force detection
- SEO score, Core Web Vitals, PageSpeed
- Backups: Akeeba (Joomla) & UpdraftPlus (WordPress)
- Server metrics: PHP, MySQL, load, TCP ports, IP reputation
- Native agents for Joomla 4/5/6, WordPress, PrestaShop
Alerts via Email, SMS, Slack, Telegram, Discord, Teams, Webhook.
Multi-site dashboard for agencies. White-label available.
GDPR-compliant, European hosting.
Plans from €10 to €79/month — 10-day free trial.
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Amazon CloudWatch
Amazon CloudWatch is a monitoring and observability service built for DevOps engineers, developers, site reliability engineers (SREs), and IT managers. CloudWatch provides you with data and actionable insights to monitor your applications, respond to system-wide performance changes, optimize resource utilization, and get a unified view of operational health. CloudWatch collects monitoring and operational data in the form of logs, metrics, and events, providing you with a unified view of AWS resources, applications, and services that run on AWS and on-premises servers. You can use CloudWatch to detect anomalous behavior in your environments, set alarms, visualize logs and metrics side by side, take automated actions, troubleshoot issues, and discover insights to keep your applications. CloudWatch alarms watch your metric values against thresholds that you specify or that it creates using ML models to detect anomalous behavior.
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Visual Sentinel
Visual Sentinel is a six-layer website monitoring platform for public websites, web applications, APIs, and client portfolios. It combines HTTP uptime, performance and Core Web Vitals, SSL certificate and domain expiry, DNS change detection, rendered browser screenshot comparisons, and critical content assertions. Visual Sentinel is designed to catch failures that ordinary ping monitors miss, including blank renders, missing CTAs, broken layouts, defacement, injected content, and unexpected page changes that still return 200 OK. Incident records keep the response, timeline, and visual evidence together. Teams can alert through email, Slack, Discord, Telegram, WhatsApp, Microsoft Teams, PagerDuty, Opsgenie, webhooks, and browser push according to plan. Additional features include server monitoring, API monitoring, status pages, client reports, Google and Cloudflare integrations, an Android companion, REST API, and MCP tools.
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