Nagios Alternatives – what to consider?

Nagios was once viewed as THE open source network monitoring tool, but as the challenges and requirements within IT continue to evolve over time, many are looking to Nagios alternatives to fulfill their ever growing needs. The size of IT infrastructure and number of hosts continues to ‘go through the roof’ and many enterprises require and are actively seeking alternatives to Nagios to meet their modern IT infrastructure needs. Here are some important things to consider when evaluating the best alternatives to Nagios


Monitoring large and complex IT infrastructure with distributed systems, redundancy and thousands of hosts is a real complex challenge. Most monitoring tools are fine initially, however when they hit 1,000 hosts they face issues with stability problems or unreasonable large hardware requirements. For larger enterprises Nagios can be both costly and heavy to support, in part due to the Nagios farm – the large amount of Nagios servers required to run Nagios when monitoring a large IT environment with Nagios. So when looking for Nagios alternatives, a simple yet important thing is to consider the future not just the present, will this monitoring solution scale?


For many organizations, automation is an important priority and a necessary requirement, thanks in part to coping with an increase in size, fluctuating demands and high SLAs in the IT infrastructure but no change in actual resources. Few monitoring tools can claim to offer full automation, but when looking for an alternative to Nagios make sure that event correlation, trend predictions and command possibilities are a standard. Look for monitoring tools with clear and well documented API’s that enable you to integrate with other solutions and build the automation process that suits your organization.

Monitoring Hybrid IT

Virtualization where applications, services and infrastructure are moving to the cloud shows no sign of slowing, most organizations we work with though are choosing a hybrid IT environment, keeping some infrastructure in the basement. It’s important when searching for a nagios alternative to ensure that you have control and insight into both your legacy IT and your virtual machines.

Flexibility and eco-system of integration

One of Nagios’ largest strengths is their huge community and eco-system of plugins.  If you chose to migrate to another monitoring solution with as little upheaval as possible, then it’s worth considering Nagios compatible products which give you access to the full eco-system of Nagios plugins.

Consider Support

Experts, like Gartner recommend that enterprises use supported products over open-source to reduce maintenance and person-dependencies. Having access to 24/7 support obviously saves a lot of time and money.

Nagios Alternatives

So, what are the alternatives to nagios currently out there on the market? Well you have the large giants with their commercial products such as Microsoft’s SCOM and IBM’s Tivoli, then you have a number cloud based monitoring tools like Monitis, Anturis and Happy Apps.

If you are considering a windows based monitoring tool there is solarwinds, if you prefer other open source network monitoring tools to Nagios, then you have Icinga, Zabbix and of course OP5.

OP5 was one of the largest contributors to the Nagios project, and the initiator of Naemon, before moving on to develop OP5 Monitor.

With over a decade of expertise and a solution that exceeds today’s requirements of monitoring solutions for modern enterprise companies, there is a reason that OP5 Monitor is the preferred Enterprise Open Source Networking & Server Monitoring tool for large multi-national companies in over 60 global markets.

Don’t just take our word for it though, judge for yourself by trying OP5 Monitor with our free 30 day free trial.