Pingdom is not available as a self-hosted solution but there are plenty of alternatives for power users and business that want to host a solution on-premise. The best Self-Hosted alternative is PHP Server Monitor, which is both free and Open Source. If that doesn't suit you, our users have ranked more than 100 alternatives to Pingdom and 16 are available as a self-hosted solution so hopefully you can find a suitable replacement. Other interesting Self-Hosted alternatives to Pingdom are Cabot (Free, Open Source), APId (Free, Open Source), cState (Free, Open Source) and NetCrunch (Paid).
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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PHP Server Monitor vs Pingdom opinions
pros, cons and recent comments
Very easy to deploy and actively maintained, all while offering a lot of providers to receive notifications. If you're looking for a simple solution to alert you when a service goes down, this is perfect.
NetCrunch is an all-in-one and agentless network, server, application, log, file and web monitoring suite, capable of monitoring more than 1 million elements at once. It runs on Windows Server and only needs 4GB of RAM and 4 cores.
GitHub-powered open-source uptime monitor and status page. Monitor uptime every 5 minutes Using GitHub Actions, monitor unlimited webpages every 5 minutes, and store version-controlled response time stats.