# What are network monitoring tools? Concepts & types explained **By:** Visakh **Reading time:** 7 minutes **Last updated:** July 27, 2026 Network monitoring tools are software utilities that monitor the uptime, health, and performance of IT systems like routers, switches, firewalls, and servers. They use network protocols and agents installed inside these systems to collect data in the form of metrics and logs. Most network monitoring tools also include alerting, reporting, and visualization features to enable IT teams to find IT issues proactively, analyze trends, and ensure optimal performance. ## Why are network monitoring tools important? Network monitoring tools are non-negotiables for organizations relying on IT systems to run their operations (which are almost all of them). Without monitoring, IT teams have no visibility into the systems they manage, resulting in unplanned outages, high-costs, and security risks. Let's see some of the benefits of using network monitoring tools: - **In-depth visibility:** The network is an interconnected web of routers, switches, servers, and cloud infrastructure. Network monitoring tools ensure smooth and seamless operations by providing visibility into each of these components. - **Faster troubleshooting:** Instead of waiting for an end-user to complain, monitoring tools detect issues proactively. - **Minimal downtime:** Network downtime is expensive, leading to lost productivity, revenue, and customer trust. Monitoring tools provide the diagnostic data needed to find the root cause of an issue, helping IT teams fix them faster. - **Capacity planning and optimization:** Monitoring tools show how networks use system resources like CPU, memory, and storage space over time. This data allows organizations to optimize their current hardware investments and make informed, data-driven decisions about when and where to upgrade infrastructure, rather than relying on guesswork. - **Security anomaly detection:** Network monitoring tools aid SecOps teams by flagging anomalies that might be a sign of intrusions or attacks. ## What are the different types of network monitoring tools? We can classify network monitoring tools into different types based on a variety of factors. Each type will be specialized for a different use-case with different advantages and disadvantages. IT teams usually use a combination of different tools as their monitoring needs are rarely confined for a specific situation. ### Based on data collection mechanisms **Agent-based tools:** These tools use software packets, otherwise known as agents to collect data from network devices. These agents are installed inside the device from which they collect and send metrics to the monitoring tool. **Agentless tools:** Agentless monitoring is the norm in modern network monitoring tools. They use protocols like SNMP, gNMI, WMI, Telnet, SSH or APIs to collect data from network devices. ### Based on licensing **Open-sourced tools:** These tools are free to use, and their source code is open for anyone to view or change. They suit teams that have the skills to set up and run the tool on their own, without paying for vendor support. **Paid commercial tools:** Vendors sell these tools, usually as a subscription or a license fee per device. They come with customer support, regular updates, and a ready-to-use interface. **MSP tools:** These tools are built for managed service providers. They let one team monitor many client networks from a single dashboard. Most include multi-tenancy and white-labeling, so providers can manage several customers at once. ### Based on the monitored metrics **Uptime monitoring tools:** These tools check if a device, server, or service is online. They ping targets at set times and send an alert the moment something goes offline. **Performance monitoring tools:** These tools track how well devices and apps are running. They measure things like latency, bandwidth use, and response time, so IT teams can catch slowdowns early. **Hardware monitoring tools:** These tools watch the physical health of network devices, tracking metrics like CPU use, memory, and temperature. They help IT teams spot failing parts before they cause an outage. **Traffic monitoring tools:** These tools track the flow of data across the network, showing which apps, users, or devices use the most bandwidth. This helps teams spot odd patterns that could signal an attack. **Log monitoring tools:** These tools gather and study log data from devices, servers, and apps. They help IT teams fix issues, meet compliance rules, and look into security incidents. **VoIP monitoring tools:** Monitors the quality of voice over IP (VoIP) traffic, which is used to make phone calls over the internet. IT teams use these tools to ensure compliance and prevent call quality issues. ### Based on the scale of the network **Home networks:** For home-based small networks running a few routers and servers, basic uptime and performance checks will suffice. Free network monitoring tools offer this, along with reports and dashboards to visualize monitored information. **Small and medium sized networks (SMBs):** SMBs can have hundreds of devices running in their network. SMB network monitoring tools often incorporate automated discovery, wider coverage of performance metrics, and network mapping features. They are also designed to scale well to support small, but rapidly growing networks. **Enterprise networks:** Enterprises run thousands of devices that are often distributed amongst multiple branch offices and datacenters. Enterprise network monitoring tools are built to scale across distributed environments, offer high availability, role-based access control, and advanced analytics to handle the complexity of large infrastructures. ## What are the essential components of a network monitoring tool? Tools vary in scope, but most good network monitoring platforms share the same core parts. Together, these parts turn raw network data into insights that IT teams can act on. **Data collection:** This is the base layer of any monitoring tool. It gathers metrics and logs from devices using agents or protocols like SNMP and WMI. **Performance monitoring:** Tracks key metrics like latency, bandwidth, and uptime. It gives IT teams a live view of network health. **Alerts and notifications:** Flags issues the moment they happen. Alerts go out by email, SMS, or through tools like Slack, so problems get fixed fast. **Reports and visualization:** Turns raw data into dashboards, graphs, and charts. It helps IT teams spot trends and share network health with others. **Machine learning engine:** Studies past data to build baselines and spot anomalies. It predicts issues ahead of time, cutting down the manual work needed to keep the network running well. ## ManageEngine OpManager: All-in-one network monitoring tool Most network monitoring tools are built to operate for specific requirements. However, IT infrastructures are rarely limited to one. For instance, within the same network, there might be network devices that require agentless monitoring as well as secure servers that need agent-based monitoring. Moreover, most IT teams also need to monitor device uptime, performance, and hardware along with traffic and logs. This often leads to teams using multiple network monitoring tools. This can have multiple setbacks: Along with the costs and license complexities, teams can also suffer from tool sprawl, where managing the number of tools itself becomes a real challenge. ManageEngine OpManager offers a unified alternative to this. OpManager is an uptime, performance, and hardware health monitoring tool with agent-based and agentless monitoring mechanisms. OpManager comes with an in-built ML engine, powerful Gen-AI integrations, and a versatile MCP server to simplify network monitoring. With built-in add-ons, you can easily extend OpManager's capabilities to perform traffic analysis, log monitoring (for apps, servers, and firewalls), and config management. OpManager also provides an enterprise edition, which allows you to monitor thousands of devices spread across distributed sites with ease. Most importantly, you can choose all of the features that you want in your network monitoring tool without overpaying for the others. ## Resources to dig deeper ### Network monitoring tool ManageEngine OpManager is a network monitoring tool that turns the raw telemetry generated by your IT into intelligent insights. [Learn more →](https://www.manageengine.com/network-monitoring/network-monitoring-tools.html) ### Additional resources - **Server monitoring tools** https://www.manageengine.com/network-monitoring/server-monitoring.html - **Network performance monitoring** https://www.manageengine.com/network-monitoring/network-performance-monitoring.html - **Setting smart thresholds in OpManager** https://www.manageengine.com/network-monitoring/adaptive-thresholds.html - **Forecasting performance trends** https://www.manageengine.com/network-monitoring/forecasting-performance-trends.html ## Author ![Author](https://www.manageengine.com/itom/free-training/images/presenter/visakh.webp) **By Visakh** ManageEngine Team Editorial expert who enjoys elucidating the technical jargon of the IT industry into relatable, easy-to-read content. Specializes in ITOps, network monitoring, and full-stack observability.