Visual Sentinel is described as 'Hosted website and server monitoring that detects downtime, visual regressions, SSL issues, DNS changes, performance slowdowns, and content changes' and is a website monitoring tool in the network & admin category. There are more than 50 alternatives to Visual Sentinel, not only websites but also apps for a variety of platforms, including SaaS, Self-Hosted, Android and iPhone apps. The best Visual Sentinel alternative is Uptime Kuma, which is both free and Open Source. Other great sites and apps similar to Visual Sentinel are Better Stack, UptimeRobot, Tianji and Pingdom.
Netumo is a 24x7 Website Uptime monitor with Domain Tracking, so it can let you know when your site is down and back up and let you know when your domain is about to expire. You can get notified through email, SMS, Slack, Microsoft Teams, or Twitter.
United Kingdom
Cheap uptime and performance monitoring with detailed reporting and flexible alerting.
UpCanary is an automated status page and uptime monitoring platform that updates your status page from real monitoring data. Unlike tools that require manual status updates, UpCanary detects outages in under 3 seconds and reflects reality on your status page automatically.
Switzerland
Uptime tools confirm the server answered — they don't confirm customers can still complete checkout, signup, or login. NorthDuty monitors the user journeys that make you money and tells you the moment one breaks, so you find out before your client does.
AstroStatus is a user-friendly incident communication solution designed to help agile IT incident and services managers streamline and elevate their incident management processes.
Semonto is an uptime monitoring app that allows you to keep an eye on your websites, servers and apps 24/7. Get notified when something goes wrong so that you can fix it before anyone notices.
Belgium
EU
Uptime Monitor: Start monitoring in less than 30 seconds. Free Monitoring Robot for Uptime of your website, keyword, cronjob, port. Get notified by by phone, voice, email, sms and more. Website Uptime Monitor, Keyword monitor, Network uptime monitor, Cron monitor, Job...
Checkly provides a better way to monitor your API endpoints and browser click flows from a single, simple dashboard.
GermanyEU
FlareWarden is uptime monitoring built for small businesses, freelancers, and agencies who need reliable alerts without the complexity of enterprise observability platforms.
United States
Monitoria is an active monitoring service you can use to monitor your website or basically any HTTP(S) endpoint. It will periodically send requests to the selected URL, and when it starts receiving errors, it will send you a notification.
UpTower is an easy-use tool for website monitoring. UpTower checks websites in 1-minute intervals and notifies user via push notifications about every outage immediately. Using UpTower app user can monitor websites and their availability for free.
PolandEU
