Top Alternatives to HappyApps

Zabbix is enterprise open source monitoring software for networks and applications.

AppBeat is reliable website monitoring service that alerts you when there is a downtime or failure. It also measures performance and provides functional tests.

Nagios known as Nagios Core, is a free and open source computer-software application that monitors systems, networks and infrastructure.

Datadog is a monitoring service for cloud-scale applications, bringing together data from servers, databases, tools, and services to present a unified view of an entire stack.

Pingdom helps you give your customers the best possible web experience by offering a Powerful Web Performance Monitoring Solution.

StatusCake delivers accurate global website monitoring for tens of thousands of customers.

New Relic is a digital intelligence platform lets developers, ops, and tech teams measure and monitor the performance of their applications and infrastructure.

mist.io helps you streamline your operations and reduce your infrastructure costs.

Pingoscope is a website monitoring site.

Site Down is a site downtime monitoring platform.