List of the Top 8 Network Traffic Analysis (NTA) Software for Linux 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.

Datadog serves as a comprehensive monitoring, security, and analytics platform tailored for developers, IT operations, security professionals, and business stakeholders in the cloud era. Our Software as a Service (SaaS) solution merges infrastructure monitoring, application performance tracking, and log management to deliver a cohesive and immediate view of our clients' entire technology environments. Organizations across various sectors and sizes leverage Datadog to facilitate digital transformation, streamline cloud migration, enhance collaboration among development, operations, and security teams, and expedite application deployment. Additionally, the platform significantly reduces problem resolution times, secures both applications and infrastructure, and provides insights into user behavior to effectively monitor essential business metrics. Ultimately, Datadog empowers businesses to thrive in an increasingly digital landscape.

Noction Flow Analyzer serves as a comprehensive tool for network monitoring, alerting, and analytics, capable of processing data from NetFlow, IPFIX, and sFlow. Network engineers can leverage this analyzer to enhance both network and application performance, manage bandwidth utilization effectively, strategize for future network capacity, and receive timely alerts. Additionally, it facilitates in-depth analyses of BGP peering and bolsters security measures, ensuring that the network operates efficiently and securely. With its robust features, the tool proves invaluable for maintaining optimal network conditions.

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.

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.

In today's digital realm, traditional security protocols are often inadequate when it comes to combating cyber threats, prompting the need for organizations to adopt a Zero Trust Network strategy. This framework is built on clear principles: every user and device is treated as untrusted, regardless of their location within or outside the internal network, and access is strictly limited based on authenticated identities. Although these concepts are straightforward, the actual execution can be quite challenging, especially considering the potential for expensive and time-consuming upgrades to existing network infrastructures, which may discourage businesses from shifting to a Zero Trust model. Nevertheless, Unisys Stealth provides a flexible cybersecurity solution that utilizes identity-driven encrypted microsegmentation to transform your current infrastructure—whether it resides on-premises or in the cloud—into a Zero Trust Network effortlessly. By employing Unisys Stealth, organizations can tap into a comprehensive array of products and services designed to bolster their security posture, maintain compliance with regulations, and protect their operational integrity. This cutting-edge approach not only enables organizations to effectively tackle vulnerabilities but also contributes to building a more robust security framework overall, thus ensuring long-term operational resilience. Ultimately, adopting such innovative solutions can be a crucial step toward safeguarding against the ever-evolving landscape of cyber threats.