Best Free Network Traffic Analysis (NTA) Software

ManageEngine Site24x7 is a comprehensive observability and monitoring solution designed to help organizations effectively manage their IT environments. It offers monitoring for back-end IT infrastructure deployed on-premises, in the cloud, in containers, and on virtual machines. It ensures a superior digital experience for end users by tracking application performance and providing synthetic and real user insights. It also analyzes network performance, traffic flow, and configuration changes, troubleshoots application and server performance issues through log analysis, offers custom plugins for the entire tech stack, and evaluates real user usage. Whether you're an MSP or a business aiming to elevate performance, Site24x7 provides enhanced visibility, optimization of hybrid workloads, and proactive monitoring to preemptively identify workflow issues using AI-powered insights. Monitoring the end-user experience is done from more than 130 locations worldwide.

ManageEngine OpManager is a powerful network traffic analysis solution that provides deep insights into network usage and performance. It monitors traffic patterns, bandwidth consumption, and application performance across the network, enabling IT teams to identify bottlenecks, troubleshoot issues, and optimize resource allocation. With features such as real-time monitoring, detailed reporting, and customizable dashboards, OpManager helps organizations gain visibility into network traffic, understand user behavior, and make informed decisions to enhance overall network efficiency and performance.

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.

Faddom offers real-time, agentless application dependency mapping to give IT teams instant, risk-free visibility into hybrid environments. No credentials, no software installs, and no firewall changes. Faddom maps servers, applications, cloud resources, and traffic flows within an hour of deployment. This always-live mapping supports security audits, change impact analysis, cloud migration, IT documentation, and incident response. Faddom provides continuous infrastructure clarity without disruption, enabling better planning, control, and compliance. Trusted by organizations across industries, Faddom is built for speed, security, and simplicity. Deploy fast. Discover more. Stay in control.

CySight's Dropless Collection method provides absolute data retention, enabling the most data orientated decision making and cost-effective workflow for any organization, significantly enhancing network performance, network security and cyber intelligence to the highest level. With a Unique approach, CySight delivers comparative baselining, superior granularity, scalable collection, root cause analysis and QoS Analysis. All Designed to run independently or work together as a powerful single unit. CySight empowers communication and application visibility for networking, security, billing and compliance with high-end integrated network traffic analytics, granular forensics, cybersecurity intelligence, cloud usage, internet-of-things analytics, peering and billing to medium and large enterprise customers and service providers. Our objective at CySight is to reveal your data’s potential and eliminate all blind spots.

Malcolm is an open source security monitoring platform designed to help security professionals collect, process, and analyze network data for threat detection and incident response. It integrates multiple powerful tools to gather and visualize network traffic, log data, and security alerts. Malcolm’s user-friendly interface allows security analysts to easily investigate potential threats by providing detailed insights into network activity. It is designed for scalability, offering flexible deployment options across various environments, from small businesses to large enterprises. Malcolm’s modular design ensures users can customize the platform to suit their specific security requirements, while its integration with other observability tools ensures comprehensive monitoring. While Malcolm is great for general-purpose network traffic analysis, its creators see a particular need in the community for tools providing insight into protocols used in industrial control systems (ICS).

SparrowIQ is a turnkey network traffic monitoring solution developed to help IT organizations to rapidly troubleshoot and diagnose network issues and provide visibility into how applications are performing and thus affecting end user experience. Its award-winning ‘resource efficient’ design combines powerful performance monitoring capability in an easy-to-deploy, intuitive package ensuring minimal administrative load on an already strained IT staff. SparrowIQ was designed for small and medium businesses that have the same need as their larger counterparts for enterprise-class monitoring solutions but have limited technical resources, time and money to invest in traditional systems.

NetFlow Analyzer is an easy solution for net admins to better understand bandwidth consumption, traffic trends, applications, hosts and traffic anomalies, by visualising the traffic by network devices, interfaces and subnets, traffic segments and end users. NetFlow Analyzer utilizes Cisco® NetFlow, IPFIX, NSEL, sFlow and compatible netflow-like protocols to help net admins with bandwidth monitoring, network traffic investigation, analyses and reporting. This way, companies can optimise networks and applications, plan network expansion, minimize time spent on troubleshooting and diagnostics, and improve security. NetVizura allows you to define custom traffic to be monitored based on IP subnets and traffic characteristics like protocol and service used. Monitor specific traffic for each organisational unit in your network such as departments, remote sites and collections of regional offices by identifying them with IP subnets.