List of the Top 7 Free Network Traffic Analysis (NTA) Software in 2025

Site24x7 offers an integrated cloud monitoring solution designed to enhance IT operations and DevOps for organizations of all sizes. This platform assesses the actual experiences of users interacting with websites and applications on both desktop and mobile platforms. DevOps teams benefit from capabilities that allow them to oversee and diagnose issues in applications and servers, along with monitoring their network infrastructure, which encompasses both private and public cloud environments. The comprehensive end-user experience monitoring is facilitated from over 100 locations worldwide, utilizing a range of wireless carriers to ensure thorough coverage and insight into performance. By leveraging such extensive monitoring features, organizations can significantly improve their operational efficiency and user satisfaction.

ManageEngine OpManager is an advanced solution for analyzing network traffic, offering comprehensive insights into usage and performance metrics. It tracks traffic trends, bandwidth utilization, and application efficiency throughout the network, allowing IT departments to pinpoint congestion, resolve problems, and improve resource management. Equipped with capabilities like live monitoring, in-depth reporting, and personalized dashboards, OpManager empowers organizations to visualize network traffic, analyze user interactions, and make data-driven choices to boost the overall effectiveness and performance of their networks.

NetFlow Analyzer offers immediate insights into network bandwidth performance by utilizing flow technologies effectively. This tool delivers an in-depth perspective on your network's bandwidth consumption and traffic behaviors. It has successfully optimized countless networks around the globe. Serving as a unified solution, NetFlow Analyzer examines, reports, and gathers information regarding your network's bandwidth consumption. With the capability to enhance bandwidth management across over a million interfaces globally, it also includes features for network forensics and traffic analysis. By adjusting policies through traffic shaping with ACLs and class-based rules, you can exercise control over the most frequently used applications. Furthermore, NetFlow Analyzer employs Cisco NBAR technology to provide an intricate understanding of Layer 7 traffic. It is also proficient in detecting applications that utilize dynamic port numbers or conceal themselves behind commonly used ports, ensuring comprehensive network management. Ultimately, this tool is essential for maintaining optimal network performance and security.

CySight’s groundbreaking Actionable Intelligence is relied upon by Fortune 500 companies worldwide, providing organizations with a highly efficient and secure solution to address the growing challenges posed by the complexity and scale of contemporary physical and cloud networking. By leveraging cyber network intelligence, CySight enhances the capabilities of network and security teams, allowing them to significantly speed up incident response times by revealing hidden vulnerabilities, scrutinizing network data to identify irregularities, detecting cyber threats, and assessing the usage and performance of assets. Additionally, CySight’s innovative Dropless Collection technique grants unparalleled visibility into vast network data, ensuring that information is stored in the most compact manner possible, which in turn boosts machine learning, artificial intelligence, and automation efforts to maximize the potential of all types of metadata, regardless of size or complexity. This comprehensive approach not only streamlines operations but also empowers organizations to stay ahead in an ever-evolving digital landscape.

Malcolm acts as a comprehensive open-source platform for security monitoring, designed to support security professionals in gathering, processing, and analyzing network data to improve threat detection and incident response efforts. By combining a variety of powerful tools, it empowers users to efficiently capture and visualize network traffic, log data, and security alerts. The platform is equipped with an intuitive interface that streamlines the investigation of possible threats, providing security analysts with in-depth insights into network behaviors. Scalability is a fundamental feature of Malcolm, as it presents flexible deployment options that cater to diverse environments, ranging from small enterprises to large organizations. Moreover, its modular design allows users to customize the platform to meet their specific security requirements, while smooth integration with other observability tools bolsters overall monitoring efficacy. Although Malcolm is proficient in general network traffic analysis, its creators acknowledge a pronounced need within the community for tools focused on understanding the protocols used in industrial control systems (ICS), thus filling a vital gap in security monitoring. This emphasis on ICS not only enhances the platform’s applicability but also underscores its importance in industries where such systems play a crucial role in maintaining operational integrity and safety, making Malcolm a pivotal resource for security experts across various sectors.

SparrowIQ serves as a holistic network traffic monitoring tool designed for IT teams to quickly detect and address network issues while also providing valuable insights into application performance and its effects on user experience. Its renowned 'resource efficient' design incorporates strong performance monitoring features within a simple and easily deployable framework, which lightens the workload for overburdened IT staff. Specifically designed for small to medium-sized businesses, SparrowIQ delivers high-quality monitoring capabilities akin to those of larger companies, while considering the technical, time, and financial limitations that these organizations frequently encounter. This innovative solution ensures that smaller enterprises can uphold competitive operational standards without incurring the significant costs often associated with conventional monitoring systems. By facilitating a more efficient troubleshooting process, SparrowIQ enables organizations to not only improve their network performance but also boost user satisfaction and engagement. Ultimately, this empowers businesses to thrive in an increasingly digital landscape.

NetFlow Analyzer equips network administrators with a straightforward method to analyze bandwidth usage, identify trends, monitor applications, and detect traffic irregularities. It offers visual representations of traffic across network devices, interfaces, subnets, traffic segments, and end users, utilizing protocols like Cisco® NetFlow (IPFIX, NSEL, and sFlow) along with other similar netflow-compatible protocols. This tool aids network administrators in overseeing bandwidth, investigating network traffic, and generating detailed reports. By leveraging this technology, organizations can enhance their networks and applications, strategize for future network growth, minimize the time allocated to troubleshooting and diagnostics, and bolster their security measures. Furthermore, NetVizura provides the capability for users to customize the traffic they wish to monitor, focusing on specific IP subnets and traffic characteristics, including the protocols and services in use. This allows for the monitoring of targeted traffic within different segments of the network, such as individual remote locations, departmental units, or clusters of regional offices, effectively tailoring oversight to meet the organization's needs. This targeted approach ensures comprehensive network management and efficiency.