isUp is described as 'Website/Server monitoring with fast notification via Web, SLACK or E-Mail on issues. What you get: 25 monitors, checked every 15 minutes. Now includes SSL-Certificate validation and port checks. Totally free!' and is a Uptime Monitor service in the network & admin category. There are more than 50 alternatives to isUp, not only websites but also apps for a variety of platforms, including SaaS, Self-Hosted, Linux and Windows apps. The best isUp alternative is Uptime Kuma, which is both free and Open Source. Other great sites and apps similar to isUp are UptimeRobot, Pingdom, Instatus and StatusCake.
Self-hosted monitoring tool to track uptime via HTTP(s), TCP, Ping, and more with reactive design. Offers 20-second interval checks, notifications through various channels like Webhook, Telegram, supports multiple languages, includes status page and ping charts, aiding small to medium enterprises effectively.
Free real-time monitoring for 50 sites every 5 minutes. Custom alerts through email, SMS, calls, and apps like Slack, PagerDuty, and more. Use status pages and mobile apps for easy management.
Tracks uptime, downtime, and page speed with synthetic and real user monitoring, simulates critical flows, analyzes visitor data by location, device, and browser, sends instant alerts, and provides analytics and reporting to troubleshoot and optimize sites.
Instantly set up static status pages that load up to 10x faster, enable unlimited team updates, notify all subscribers for free, and operate independently of backends. Plans start free, with paid options well below legacy competitors’ prices. Boosts reliability and keeps users informed.
Provides uptime, performance, and page speed monitoring for up to 10 websites. Offers customizable alerts by email, SMS, or third-party apps, root cause analysis, mobile support, server and SSL checks, plus a free plan with detailed reports for diagnostics.
All of your MX record, DNS, blacklist and SMTP diagnostics in one integrated tool. Input a domain name or IP Address or Host Name. Links in the results will guide you to other relevant tools and information.
Receive detailed website downtime alerts by phone, SMS, email, or Slack, monitor uptime and performance in real time from global data centers, avoid false positives, create customizable status pages, generate incident management and performance reports.
Advanced hosted status pages. Offering a complete REST API, native curl-like monitoring, metrics, semantic statuses, informational, maintenance, and scheduled issues, and more.
Real-time monitoring with checks every minute from over 30 global locations, alerts for outages or slowdowns, detailed uptime and response time reports, customizable alerts, public status pages, SSL and domain monitoring, and REST API for automation.
Cachet is a simple to use and easy to manage status page system and can be easily installed and used to track third party service letting your users know what's going on.
PHP Server Monitor is a script that checks whether your websites and servers are up and running. It comes with a web based user interface where you can manage your services and websites, and you can manage users for each server with a mobile number and email address.
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