Best Nagios Alternatives for Server, Application and Network Monitoring

nagios alternatives for server and application monitoring

Marc Wilson

Nagios is a great tool for Server and Application monitoring and keeping an eye on your infrastructure and organization. For being Open Source and widely available for multiple operating systems, Nagios can sometimes have its limitations compared to other commercially available options.

We'll discuss some of the best Nagios Alternatives for server and network monitoring for your infrastructure, along with some in-place replacements that make it seamless to migrate.

Common issues that have arisen from folks using Nagios are things such as Auto-discovery of services and applications being used without additional configuration and add-on's being thrown into the mix.

Here is our list of the top Nagios Alternatives:

  1. SolarWinds Server & Application Monitor – EDITOR’S CHOICE This monitoring package traces the performance of applications, services, and servers, and links their operations together so it can spot gathering problems with resource shortages. Installs on Windows Server. Start a 30-day free trial.
  2. Paessler PRTG – FREE TRIAL This bundle of network, server, and application monitors can be tailored by deciding which sensors – the free trial lets you use all of them. Runs on Windows Server.
  3. WhatsUp Gold A network performance monitor that can be expanded by add-ons to monitor servers and applications as well. Runs on Windows Server.
  4. ManageEngine OpManager A network monitoring package that covers physical and virtual systems. Available for Windows Server and Linux.
  5. Zabbix A free monitoring package that watches over networks, servers, and applications d is a close rival to Nagios Core. Runs on Linux.
  6. OpenNMS A useful, free network monitoring package that can be expanded by plugins. Offered in free and paid versions, this system runs on Linux.

Gartner even had an article on the matter than went into some detail about why folks should get rid of it altogether and look for a better supported software, in case your “talented engineer” decides to leave the company, you won't have a mess on your hands trying to figure out how to upgrade and config a Nagios instance.

Regardless of why your looking for an alternative to Nagios, we've detailed a list of the best network monitoring software that can replace Nagios in your environment. Some of these are Free, others are Paid and commercially supported, which we Highly recommend in any production environment. We've been in many situations where having a support contract has saved us hours on end in troubleshooting and misconfiguration of the software.

Here's the Best Alternatives to Nagios:

This is a quick list of Server and Application monitoring software that can be used in place of Nagios in your environment.

1. SolarWinds Server & Application Monitor – FREE TRIAL!

We've gone through several of manufacturers and come to the conclusion that SolarWinds Server & Application Monitor is in the Top Tier for alternatives in this case. SolarWinds Server & Application Monitor has a full array of Features that really stands in terms of capabilities when looking for an enterprise platform.

Main Reason SolarWinds takes the Best choice for Nagios replacements is there EASY Nagios Script Import feature that allows you migrate all scripts from your Nagios server over to SolarWinds very quickly with their import feature – This allows you to be up and Running within Minutes, not Hours!

On top of all the features, bell's and whistles that comes with the software, the enterprise support is there to assist with any issues that arise during setup or maintenance.

Features of SAM include the following (via

  • Automatic Discovery of Applications in your Environment
  • Pre-packaged Alerts and Reports which are Easily customizable
  • Agent or Agent-less Monitoring, per your requirements.
  • Customizable Built-in Templates and direct Import of Nagios Scripts (200+ Pre-built templates)
  • Server Capacity/Volume Monitoring and Planning
  • Customizable Dashboard
  • USE Existing Nagios Scripts and Import to Start Monitoring Within Several Minutes!


Here are some screenshots of SolarWinds Server & Application Monitoring in action.

solarwinds Server & Application monitor


solarwinds Server & Application monitor screenshot


solarwinds Server & Application monitor screenshot


solarwinds Server & Application monitor screenshot

Download a Free 30-day Trial and Get it setup on a VM in 15 mins

2. Paessler PRTG – FREE TRIAL

Paessler PRTG is another fairly familiar software package in the server and application monitoring world with its flexible offerings in terms of capabilities and functionality. PRTG has a nice graphical user interface and is fairly easy to use when it comes to getting setup and moving fairly quickly.

PRTG Does Not have the Nagios script Import feature that SolarWinds has but has a nice Template system and Auto Discovery system that will allow you to setup devices in an easy manner.

Some Main features of PRTG:

  • Customizable and Flexible interface
  • Flexible Alerting System
  • Distributed Monitoring Capability
  • Network Maps and more…

PRTG Network Monitor

PRTG contends nicely with the others from above, but as mentioned above, lacks the native functionality to import Nagios scripts into the Program. Check out more about PRTG at their official site and learn about their full Feature Set there. You can start of by downloading a 30-day free trial from their site.

Download Now!

3. WhatsUp Gold

WhatsUp Gold is another main competitor and replacement for Nagios as an server and application monitoring solution. WhatsUp Gold has some nice features and functionality that will prove to be useful in any environment.

The new interface for WhatsUp Gold 2017 has a very simple, uncluttered layout if that's what your looking for. We prefer a more detailed dashboard, but some like very simple and modern dashboards with multiple tabs for other screens.

Some of the Main features include:

  • Automated Discovery
  • Network Traffic Analysis and Monitoring
  • VM Overviews and Monitoring capabilites
  • Application & Server Performance Monitoring

We dug around to see if we could find some information in regards to importing or converting existing Nagios scripts into WhatsUp Gold, but could not find anything on this package either.

whatsup-gold 2017

Take a look at their official website for more information and details;

Download WhatsUp Gold Today and Give it a Test Drive:

We've highlighted Several good Nagios alternatives along with Screenshots and Feature sets. In our eyes, Solarwinds Server and Application Monitor is the clear winner due to its Native Nagios Script Import functionality which really helps you get the Monitoring system migrated over Very quickly – even within Minutes!

With a 30 Day Free Trial and their Support channels and User forums, they've really taken the necessary steps to set themselves apart from their Competitors.

4. ManageEngine OpManager

OpManager is another choice for switching out an open-source software and moving to a commercial grade software. As we've mentioned about in the SolarWinds description, one of the main issues we have is getting proper support and not having to install several other applications in order to do the job of what 1 installation should do.

ManageEngine has the following features:

We did not see anything on their Site in regards to importing Nagios scripts and this could prove to be cumbersome when trying to migrate over. SolarWinds still has the advantage over OpManager in this regards, but if you would like to read a detailed review of ManageEngine OpManager, you can see it Here!

manageengine opmanager

See more information and Features for OpManager here!


These are a few of the nagios alternatives that seem to be fitting for Paid solution, there are also an abundance of Open-source replacements that make moving away from nagios less painful and potentially cheaper.

5. Zabbix

Zabbix is a Great solution if your looking for an open-source alternative. They have really been stepping up their game lately and their interface has changed so much over the years that its worth looking into.

Features that Zabbix now includes:

  • Multiple Platform agent for monitoring different systems
  • SNMP & IPMI Monitoring Agents
  • Agentless monitoring of user services
  • Custom methods for Collecting Dadta
  • Aggregation & Calculation of Metrics/Data
  • End user Web monitoring & New UI

zabbix 4.0 interface

Official Site:


6. OpenNMS

openms dashboard

OpenNMS is another great open-source monitoring tool that really stands out from the other open-source competitors as they have partnered with some larger companies to ensure intergration and support is as seemless as possible.

They also support a wide variety of monitoring solutions and system including some of the following:

  • Citrix XenApp
  • Apache with the HTTP collector
  • Asterisk (PBX)
  • exim
  • GDataAntiVir Services
  • Microsoft AD Services
  • Microsoft Exchange
  • Microsoft Standard Services
  • Microsoft Windows Remote Desktop Session Host servers
  • Microsoft Windows Update Services (WSUS) servers
  • MySQL
  • MySQL with the HTTP collector
  • Nginx with the HTTP collector
  • PostgreSQL OpenNMS DB
  • Symantec Backup Exec
  • VMware Tools
  • Tomcat 5.5 JMX How-To

Download and Official Site: