Port Monitor is described as 'Easy and online tool that does website and server monitoring for you 24/7 every 60 seconds and sends you or your co-workers instant email/push notifications when something goes wrong' and is a very popular Uptime Monitor service in the network & admin category. There are more than 100 alternatives to Port Monitor, not only websites but also apps for a variety of platforms, including SaaS, Linux, Windows and Android apps. The best Port Monitor alternative is Uptime Kuma, which is both free and Open Source. Other great sites and apps similar to Port Monitor are UptimeRobot, Nagios, Pingdom and StatusCake.
Uptime Monitor monitors your resources using HTTP/HTTPS (highly customizable), TCP, or Ping protocols. It supports multiple notification channels such as SMS, email, Slack, and Discord. In addition, Uptime Monitor can host status pages on your own domain for free.
UptimePal offers an affordable website monitoring service. For only $1/month per URL, you get 1-minute uptime monitoring, alerting software, & performance test tools - all from a robust worldwide monitoring network.
The most frustrating part for the website owner is the failure of the internet connection with their site. If you find that you cannot access your website. Do not be panic. Most website owners feel that there is some kind of problem in the backend/server's end.
Monika is a command-line application to monitor every part of your web app using a simple YAML configuration file. Get alert notifications through SMTP, Discord, Slack, WhatsApp, and many more when your site is down but also when it's slow!.
Trafikito is free Linux servers monitoring solution which by default checks RAM, disk space, CPU and sends you an email if something is wrong.
UpTimeLine checks that your websites are online and notifies you in case of downtime. Get up to 20 monitors checked every 5 minutes for free. All HTTP methods, custom body and headers, regex check on response body, SSL certificate monitoring and more.
Website Monitoring - Monitor your website uptime and HTTP/FTP/SMTP/POP3 services. Real-time Phone and SMS alerts. Free website monitors available.
Simple website availability and uptime monitoring tool. No installation, checks for backend and frontend errors.
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.
Open Source (GPLv3) Network Monitoring for Windows, Linux & Android. Simple setup, auto-detects running services, runs checks concurrently, open port scanning and alerting. Written in C++ & Qt 5.
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