11 Best Nagios Alternatives (Free & Open Source) in 2024

Nagios is an open source network monitoring solution. It helps organizations to identify and resolve IT infrastructure issues. However, Nagios could be difficult integrate into automatic provisioning processes. There are few other issues with Nagios as well.

Here, is a curated list of top tools that can replace Nagios. This list consists of paid as well as open-source Network Monitoring Tool with popular features and latest download link.
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Top Pick
Auvik

It is one of the best Nagio alternatives that can automate routine tasks and resolve critical technology issues proactively. It also has automated backups, detailed device monitoring, and deep traffic flow inspection.

Visit Auvik

Nagios Alternatives (Open Source & Paid)

Name Deployment Free Trial Link
👍 Auvik Cloud-based 14-Day Free Trial Learn More
👍 ManageEngine OpManager On-premise 30-Day Free Trial Learn More
👍 Site24x7’s Network Monitoring Cloud-based 30-Day Free Trial Learn More
Paessler PRTG On-premises or cloud-based 30-Day Free Trial Learn More
Network Bandwidth Analyzer Cloud-based 30-Day Free Trial Learn More

1) Auvik

Auvik’s cloud-based network monitoring software lets IT professionals experience the fastest way to manage all distributed networks and devices. It is one of the best Nagio alternatives that can automate routine tasks and resolve critical technology issues proactively.

This tool delivers out-of-the-box real-time discovery and intuitive network visualization. It also has automated backups, detailed device monitoring, and deep traffic flow inspection.

#1 Top Pick
Auvik
5.0

Supported Platform: Web-based

Business Size: Small to large businesses.

Deployment: Cloud-based

Free Trial: 14-Days Free Trial

Visit Auvik

Features:

  • Visualization: You can visualize everything on a single dashboard to see what you have to prioritize.
  • Alerts: It offers one of the best alerting features with automatic alerts whenever any unusual activity occurs so you can tackle it before it escalates.
  • Troubleshooting: You can get to the bottom of the problem with Auvik using its centralized syslog for all the network devices.
  • Backup: This tool offers backup for every change you make. You can also view and restore all the versions as per your requirements.
  • Other features: Auvik offers IT asset management, network visibility and mapping, and performance monitoring. It also provides network traffic analysis and remote network management.
  • Pricing: You can request a custom quote or calculate the price with its estimator as per your needs.
  • Free trial: 14 days free trial (Credit card not required)

Pros

  • It offers SSO authentication for easy access.
  • You get a full network inventory with device life cycle information.

Cons

  • Its traffic analysis functionality can be improved.

Visit Auvik >>

14-Day Free Trial


2) ManageEngine OpManager

OpManager is an integrated network management solution for efficient and hassle-free network monitoring that provides network performance monitoring.

It watches over your server, VM, WLC, storage, and more. With OpManager, IT admins can easily drill down to the root cause of the network problem and fix it instantly.

#2
ManageEngine OpManager
4.9

Supported Platform: Windows,Linux, iOS, and Android

Business Size: Small to large businesses.

Deployment: On-premise

Free Trial: 30-Days Free Trial

Visit OpManager

Features:

  • Monitoring: ManageEngine OpManager has physical server monitoring and virtual server monitoring of the host and VMS of VMware. It also monitors Hyper-v, Nutanix, and Citrix XenServer virtualization platforms.
  • Reports: OpManager offers scheduled and custom reports for network performance and business snapshot-based reports.
  • Network visualization: This tool provides network visualization, network mapping, planning, path analysis, network discovery tools, topology software, and more.
  • Other features: ManageEngine OpManager offers device discovery, grouping network elements, and bulk configuration options. It comes with real-time network monitoring solutions and out-of-the-box support for different network devices, dashboards, and widgets.
  • Pricing: You can contact its sales team for a quote.
  • Free trial: 30-day free trial

Pros

  • It is one of the best alternatives to Nagios, which offers agentless network monitoring.
  • This tool comes with customizable role-based access control.

Cons

  • The topology-based maps are not clear enough.

Visit OpManager >>

30-Day Free Trial


3) Site24x7’s Network Monitoring

Site24x7 is a holistic solution that provides insightful monitoring for enterprise networks, servers, websites, applications, and the cloud. It offers seamless integration with Slack, Microsoft Teams, Jira, and more.

Instead of having to piece together multiple solutions for your different monitoring needs, you can rely solely on Site24x7. It helps cut down silos and provides full-stack monitoring capability.

#3
Site24x7's Network Monitoring
4.8

Supported Platform: Windows,Linux, iOS, and Android

Business Size: Small to large businesses.

Deployment: Cloud-based

Free Trial: 30-Days Free Trial

Visit Site24x7

Features:

  • Auto-discovery: It can automatically discover devices that are present in a provided IP range. You get a granular visibility of the devices along with their interface levels.
  • Monitoring: This tool monitors network availability, performance, traffic (NetFlow), and cloud-managed devices (Cisco Meraki). It can also manage device configurations (NCM) from the same console.
  • Topology and Maps: This provider has topology and Layer-2 maps to help you visualize your network according to geography or hierarchy.
  • Other features: Site24x7 includes out-of-the-box support for more than 11,000 device models from over 450 vendors. It provides instant forecasts, intelligent reports, and alerts via SMS, email, and more.
  • Pricing: This software package starts at $9 per month and is billed annually.
  • Free trial: 30-day free trial

Pros

  • It includes a health dashboard.
  • You can configure network devices to send SNMP traps to Site24x7.

Cons

  • Its interface can be confusing.

Visit Site24x7 >>

30-Day Free Trial


4) Paessler PRTG

PRTG Network Monitor software has advanced infrastructure management capabilities. The tool monitors IT infrastructure with its technologies like sniffing, REST APIS, SQL, and others.

You can easily integrate this tool with flow protocols like jFlow, sFlow, IPFIX, and more. It supports SSH, HTTP requests, SNMP, WMI, and more.

Paessler PRTG

Features:

  • Monitoring: PRTG monitors all systems, traffic, apps, LANs, servers, WANs, websites and more.
  • Automatic discovery: It is capable of automatically discovering the networks. This tool can intelligently discover all devices and auto-create a suitable set of sensors.
  • Network scanning: PRTG Network Monitor can scan network segments by pinging defined IP ranges.
  • Alerts: It has an easy and flexible alerting system. PRTG alerts you when it sees warnings or unusual metrics in your network.
  • Other features: It offers maps and dashboards, customizable reporting, distributed monitoring, and more.

Pros

  • This tool helps you create web pages with up-to-date monitoring data in the desired design.
  • You can edit multiple monitoring objects at once.

Cons

  • It doesn’t function properly if you manage multiple Linux systems.

Visit Paessler >>

30-Day Free Trial


5) Network Bandwidth Analyzer

Network Bandwidth Analyzer is a tool that helps you monitor the overall performance of your network. It helps you track response time, availability, switches, and more.

This platform can detect, diagnose, and fix network issues. You can enrich bandwidth analysis using observation across the network, database, apps, and infrastructure for the hybrid IT.

Network Bandwidth Analyzer

Features:

  • Monitoring: You can use it to easily monitor bandwidth consumption. It lets you see the changes along the path and find service provider issues. This application can monitor the faults of your network.
  • Performance metrics: Network Bandwidth Analyzer allows you to drag and drop performance metrics on a timeline
  • Critical path visualization: Using a bandwidth analyzer, you can monitor critical business services. It also provides visual analysis for a device with a delivery path.
  • Other features: This tool monitors the logical component of the SDN (Software Defined Networking) environment. It offers dynamic, intelligent maps, app traffic alerting, multi-vendor network monitoring, and more.
  • Pricing: You can request the sales team for a quote.
  • Free trial: 30-day free trial

Pros

  • It offers IP address management and log management analysis.
  • You get flexible deployment options.

Cons

  • The initial setup and configuration is time-consuming.

Visit Network Band >>

30-Day Free Trial


6) Shinken

Shinken is a monitoring framework. This Nagios alternative offers full virtualization integration, endless scalability, and RAID-like availability.

You can use it to load data from new sources like Puppet and Mysql and add new export methods like Graphite.

Shinken

Features:

  • Auto-configuration: It helps you discover and configure all the elements within a few clicks by reading data sources. Shinken offers quick server and application monitoring and allows you to reuse the Nagios configuration.
  • Problem detection: This tool has an awareness of dependency links that helps it locate the root cause of the issue and send accurate alerts.
  • Visualization of data: It offers custom dashboards to visualize the data. Shinken has a full web interface that simplifies configurations and collaborations.
  • Other features: This tool has high adaptability and scalability, a user-friendly integrated interface, distributed architecture, and more.
  • Pricing: Request the sales for a quote
  • Free trial: 30 days free trial

Pros

  • It is one of the best alternatives to Nagios that offers Native Hight Availability.
  • Shinken works on any operating system and architecture that supports Python.

Cons

  • Its documentation is not comprehensive enough, and it has a steep learning curve.

Download link: https://github.com/shinken-monitoring


7) Spiceworks

Spiceworks is an easy-to-use networking monitoring tool that offers real-time status and alerts for your critical devices.

Its additional benefit is that, it is completely integrated into the Spiceworks IT management tool suite.

Spiceworks

Features:

  • Monitoring: It offers a connectivity dashboard that is easy to use and lets you start monitoring within minutes. You receive statuses in real time and alerts for critical web apps and services.
  • Alerts: It lets you adjust alert thresholds for in-app notifications or emails.
  • Insights: Spiceworks provides quick insights and spots slow, sluggish, or overwhelmed systems. Using this capability, you can fix issues in real time before they expand.
  • Other features: Spiceworks offers distributed HTTP checks, a dynamic dashboard, free support, and a helpful technical community.
  • Pricing: It is free to download.

Pros

  • This Nagios free alternative tool is simple to install and easy to set up.
  • Its support is entirely free, be it online or on the phone or chat.

Cons

  • It lacks flexibility, and the UI is outdated.

Download link: https://www.spiceworks.com/free-network-monitoring-management-software/


8) Zabbix

Zabbix is an open-source monitoring tool. This network monitoring tool focuses on managing and trending functionality.

It is widely used for monitoring servers and network hardware. Zabbix is one of the best open-source Nagios alternatives that can forecast future behavior based on historical data.

Zabbix

Features:

  • Distributed monitoring: You can easily deploy and scale your distributed Zabbix infrastructure from central Web UI. It offers native encryption between all the components for this function.
  • Unlimited scaling: Zabbix is a flexible software that lets you monitor anything you want. It is highly scalable as it helps you manage both multi-tenant enterprise environments and your home.
  • High availability: This platform ensures 24/7 uptime and removes all the risk of data loss. It also keeps all your sensitive information secure by storing it only in the external vault.
  • Other features: It offers easy measurement of network performance and health and flexible and extendable data gathering. You also get various metric collection methods and protocols and easy configuration.
  • Pricing: It is free to download.

Pros

  • Any deployment and migration are backed by professionals.
  • It is one of the monitoring systems that offers highly customizable maps, dashboards, and graphs.

Cons

  • It is not beginner-friendly, as you need to have some knowledge of OS, PHP tuning, and databases.

Download link: https://www.zabbix.com/


9) NetCrunch

NetCrunch Network monitors your network infrastructure and traffic with the help of features like switch traffic monitoring and flow analyzer.

You can use it for monitoring without needing additional database servers or web server licenses.

NetCrunch

Features:

  • Monitoring: It comes with monitoring packs for various SNMP devices. NetCruch can seamlessly scale up to 10,000 devices. It includes monitoring for operating systems, sensors, network service checkers, scripts, and more.
  • Central logic processing: Once it gathers all the data, it processes them to determine alerting conditions, checks thresholds, applies the monitoring policies, and then sends notifications.
  • Traffic flow analyzer: It lets you monitor traffic patterns and network bandwidth, recognize the IP addresses of top talkers, and more.
  • Other features: NetCrunch offers policy-based configuration, SNMP traps and notifications, and Full SNMPV3 support. It can also monitor custom network services and the cloud.
  • Pricing: Its starting price is $90 per month for 100 nodes and 100 interfaces. This is billed annually and is a flexible pricing plan.
  • Free trial: 30-day free trial

Pros

  • All the plans provide network inventory.
  • You get up to 1 year of data retention.

Cons

  • False alert prevention is available only in the highest plan.

Download link: https://www.adremsoft.com/


10) Icinga

Icinga is an open-source app and a service monitoring tool. Icinga can report on the health of your IT environment. All alert dependencies are shown in the dashboard and sent via email, SMS, or mobile messaging apps.

It has six core strengths that cover all the areas of monitoring. Icinga is capable of easily integrating your system and automating your tasks.

Incinga

Features:

  • Monitoring automation: Icinga can manage large amounts of monitoring objects. It can synchronize third-party data, has a versionized configuration, and more.
  • Analytics: This tool effortlessly discovers relations and patterns. You can create reports with the existing data from several aspects and receive dedicated insights with its filtration capability.
  • Notifications: It sends alerts in the first stage of the issue and keeps you in a loop. You can also establish rule-based alerting, easily contact the team, and assign them to manage selective environments and more.
  • Other features: Icinga offers configuration and templates, metrics and logs, infrastructure monitoring, and cloud monitoring.
  • Pricing: Contact sales for the quote. It includes a free-to-download version.
  • Free trial: It offers a demo.

Pros

  • It supports both direct monitoring and SNMP monitoring.
  • Icinga allows clustering and zone monitoring.

Cons

  • Its configuration can be confusing.

Download link: https://www.icinga.com/


11) OP5 Monitor

OP5 Monitor is a software for network and server monitoring and management based on the open-source project Nagios. The OP5 Monitor displays the status, health, and performance of the IT network.

It can gather data regardless of your technology stack across hybrid environments.

OP5 Monitor

Features:

  • Full immediate visibility: OP5 Monitor provides an entire view of your IT infrastructure via a single pane of glass.
  • Performance reporting: It offers service-level reports for service monitoring, network monitoring, and server monitoring.
  • Monitoring: OP5 Monitoring provides SNMP monitoring and API monitoring. It is highly customizable and offers unparalleled scalability across distributed environments.
  • Other features: This tool offers log server monitoring with fully customizable and interactive dashboards. OP5 can also read, process, and generate alerts from SNMP traps and includes automatic self-healing capability.
  • Pricing: Starting price costs $135 per month
  • Free trial: It has a free version, and you can book a demo

Pros

  • Its full REST API can integrate easily with your process flow.
  • You can easily add new functionality through its open-source community.

Cons

  • It is not very mobile device-friendly.

Download link: https://www.itrsgroup.com/products/op5-monitor

How does the Network Monitoring Tool work?

A Network monitoring tool examines each device like servers, switches, routers, and more, within an IT infrastructure. All the devices in the network infrastructure are connected to the network monitoring software.

The network monitoring tool then provides the IT admin with the insights regarding the health and performance of network components. It notifies the network admin if there is any issue, so that it can be fixed immediately in order to maintain the network’s well-being and performance.

FAQs:

Nagios is an open-source network monitoring solution. It allows businesses to identify and resolve IT infrastructure issues. Nagios is built for monitoring systems, networks, and infrastructures. It has the capability to send alerts when a problem occurs within a network infrastructure, and it can notify after the problem is resolved.

Nagios Alternatives (Open Source & Paid)

Name Deployment Free Trial Link
👍 Auvik Cloud-based 14-Day Free Trial Learn More
👍 ManageEngine OpManager On-premise 30-Day Free Trial Learn More
👍 Site24x7’s Network Monitoring Cloud-based 30-Day Free Trial Learn More
Paessler PRTG On-premises or cloud-based 30-Day Free Trial Learn More
Network Bandwidth Analyzer Cloud-based 30-Day Free Trial Learn More