Best On-Premises Network Bandwidth Monitoring Tools

ManageEngine OpManager functions as a powerful network bandwidth monitoring solution, enabling IT teams to gain deep visibility into traffic patterns and bandwidth utilization across the network. By leveraging flow technologies such as NetFlow, sFlow, J-Flow, and IPFIX, OpManager captures granular traffic data to identify top talkers, applications, protocols, and conversations consuming bandwidth. This helps administrators detect network congestion, unusual spikes, and potential misuse, allowing for informed capacity planning and faster troubleshooting. With intuitive dashboards, real-time traffic graphs, and customizable alerts, OpManager empowers organizations to optimize bandwidth usage, enhance network performance, and ensure uninterrupted service delivery.

NetCrunch is a powerful, scalable, all-in-one network monitoring system built for modern IT environments. It supports agentless monitoring of thousands of devices, covering SNMP, servers, virtualization (VMware, Hyper-V), cloud (AWS, Azure, GCP), traffic flows (NetFlow, sFlow), logs, and custom data via REST or scripts. With 670+ monitoring packs and dynamic views, it automates discovery, configuration, alerting, and automates self-healing actions for efficient remote remediation in response to alerts. Its node-based licensing eliminates sensor sprawl and complexity, providing a clear, cost-effective path to scale. Real-time dashboards, policy-driven setup, advanced alert tuning and 40+ alert actions including remote script execution, service restart, process kill or device reboot-make NetCrunch ideal for organizations replacing legacy tools like PRTG, SolarWinds, or WhatsUp Gold. Fast to deploy and future-proof. Can be installed on prem, self hosted in the cloud, or mixed.

NetFlow Analyzer is a comprehensive traffic analysis tool that leverages flow technologies to provide real-time visibility into network bandwidth performance. NetFlow Analyzer is primarily a bandwidth monitoring tool, which has optimized thousands of networks globally, offering a holistic view of your network bandwidth and traffic patterns. NetFlow Analyzer is a unified solution that collects, analyzes, and reports on your network's bandwidth usage, and by whom. NetFlow Analyzer is your partner in optimizing bandwidth usage across a million interfaces globally, as well as providing network forensics and network traffic analysis. Reconfigure policies with traffic shaping via ACLs or class-based policies to gain control of the applications that use the most bandwidth. NetFlow Analyzer leverages Cisco NBAR technology to give you deep visibility into Layer 7 traffic and recognize applications that use dynamic port numbers or hide behind known ports.

Paessler PRTG is an all-inclusive monitoring software solution developed by Paessler. Equipped with an easy-to-use, intuitive interface with a cutting-edge monitoring engine, PRTG optimizes connections and workloads as well as reduces operational costs by avoiding outages while saving time and controlling service level agreements (SLAs). The solution is packed with specialized monitoring features that include flexible alerting, cluster failover solution, distributed monitoring, in-depth reporting, maps and dashboards, and more. PRTG monitors your entire IT infrastructure. All important technologies are supported: • SNMP: ready-to-use and custom options • WMI and Windows Performance Counters • SSH: for Linux/Unix and macOS systems • Traffic analysis using flow protocols or packet sniffing • HTTP requests • REST APIs returning XML or JSON • Ping, SQL, and many more

Avoid downtime with a network monitoring solution that covers you from the network edge to the cloud. See developing issues before users report them. Troubleshoot faster from an interactive topology map that shows connectivity and dependencies. See what's up and what's down instantly whether in the cloud or on-premises. Get complete visibility to the status of network devices, systems and applications. Leverage topology-aware monitoring that understands network dependencies so you receive fewer, more intelligent alerts. Receive notifications through SMS, email, web or Slack so you know about developing issues before users report them. Integrate your other systems with a powerful REST API to automate your workload. See network devices, servers, virtual machines, cloud and wireless environments in context. Click on any device to get immediate access to a wealth of related network monitoring settings and reports. See how everything is connected and get answers faster.

Network Performance Monitor (NPM) by SolarWinds delivers advanced network troubleshooting for on-premises, hybrid, and cloud services using critical path hop-by-hop analysis. Powerful and affordable, this modern network monitoring software enables IT organizations to quickly detect, diagnose, and resolve network issues and outages, thereby improving network performance. SolarWinds’ Network Performance Monitor offers a host of features such as Performance analysis dashboard, NetPath critical path visualization, Intelligent alerts, Multi-vendor network monitoring, Network Insight for Cisco ASA and F5 BIG-IP.