Best Network Discovery Tools for Linux of 2025

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FirstWave’s NMIS is a network management system that provides fault, performance, configuration management, performance graphs, and threshold alerts. Business rules allow for highly specific notification policies that can be used with multiple notification methods. FirstWave also enables partners, including some of the world’s largest telcos and managed service providers (MSPs), to protect their customers from cyber-attacks, while rapidly growing cybersecurity services revenues at scale. FirstWave provides a comprehensive end-to-end solution for network discovery, management, and cybersecurity for its partners globally.

ManageEngine OpManager serves as a robust network discovery tool that autonomously detects and visualizes every device connected to a network. It offers an in-depth view of the network architecture, encompassing routers, switches, servers, and various other elements, allowing IT personnel to grasp their network layout effectively. With capabilities such as automatic classification of devices, real-time monitoring, and comprehensive reporting, OpManager streamlines the oversight of intricate networks. This dynamic application aids organizations in keeping precise inventories, improving resource distribution, and boosting overall network efficiency by delivering critical insights into device interconnections and connectivity status.

Unimus serves as an on-premises Network Automation and Configuration Management (NCM) tool designed for quick implementation and ease of use. Its robust Network Discovery feature thoroughly scans your network to identify all connected devices, gathering information such as hostnames, serial numbers, vendor details, operating system information, and open SSH/Telnet ports. Once identified, these devices can be easily accessed for backups, audits, configuration deployments, and command-line interface interactions. Users can schedule scans, and the system accommodates IP exclusions to ensure targeted discovery. This capacity provides IT teams with comprehensive visibility of their network with minimal effort involved. Supporting over 400 device types from more than 150 vendors, Unimus is a versatile solution that facilitates automation, change management, and configuration auditing. It minimizes manual errors, enhances security, and accelerates operations — all without requiring any coding skills.

Since 2004, NetBrain has transformed network operations with its no-code automation platform, helping teams systematically shift left by turning complex processes into streamlined workflows. By unifying AI and automation, NetBrain delivers actionable hybrid network-wide observability, automates troubleshooting, and enables safe change management to boost efficiency, reduce MTTR, and mitigate risk, enabling IT organizations to proactively drive innovation. Get network-wide and contextualized analysis across your multi-vendor, multi-cloud network Visualize and document the entire hybrid network using dynamic network maps and end-to-end paths Automate network discovery and ensure data accuracy for a single source of truth Auto-discover and decode your network's golden configurations, discover day 1 issues, and automate configuration drift prevention Automate pre- and post-validations for network changes with application performance context understanding Automate collaborative troubleshooting from human to machine

OpUtils is an IP address and switch port management tool that engineers can use to efficiently monitor, diagnose and troubleshoot IT resources. OpUtils is a complement to existing management tools, providing real-time monitoring and troubleshooting capabilities. It makes it easy for network engineers to manage their switches and IP addresses. This switch port management tool includes over 20 tools that can be used to monitor network performance, such as monitoring bandwidth usage, monitoring the availability of critical devices, and backing up Cisco configuration files. Advanced IP scanning of IPv4 or IPv6 subnets within your network is possible to identify available and used IP addresses. You can scan all switches in your network, map ports, run port scans, and view details such user, physical location, and more. Block access to rogue devices and identify rogue device intrusions.

Open-AudIT is an advanced software solution designed for network discovery and inventory management that effectively scans an organization's network, capturing the configurations of all identified devices. This functionality allows for quick access to critical information such as software licensing, changes in configurations, unauthorized devices, capacity usage, and the status of hardware warranties. Capable of handling extensive data from diverse and large networks, Open-AudIT organizes this information into easily customizable reports. Users can effortlessly set up network discovery profiles tailored to their organization and initiate a discovery process with a single click or through automated scheduling. The software conducts daily audits of the network without disrupting user activities, while also systematically storing the configurations of every detected component. Furthermore, Open-AudIT meticulously monitors and reports on changes in IT asset configurations, software licenses, occurrences of shadow IT, and the status of hardware warranties, ensuring comprehensive oversight of the organization's network environment. Its robust capabilities make it an essential tool for organizations seeking to enhance their IT asset management and security.

Scapy is an advanced, interactive tool designed for packet manipulation. It excels in crafting and interpreting packets across a multitude of protocols, facilitating their transmission, capturing data, and correlating requests with responses, among various other functionalities. This versatile program can efficiently perform traditional tasks such as scanning, tracerouting, probing, unit testing, executing attacks, and discovering networks, effectively replacing tools like hping, a significant portion of nmap, arpspoof, arp-sk, arping, tcpdump, tshark, and p0f. Furthermore, Scapy stands out in executing specialized tasks that other utilities struggle with, including the transmission of invalid frames and the injection of custom 802.11 frames, as well as employing techniques like VLAN hopping combined with ARP cache poisoning or VOIP decoding over WEP-encrypted channels. It is compatible with various operating systems, including Linux, Windows, OSX, and most Unix variants that utilize libpcap. Notably, the same codebase supports both Python 2 and Python 3, showcasing its versatility. The development of Scapy is managed through the Git version control system, with its primary repository available on GitHub, allowing for collaborative improvements and updates. As a result, users benefit from continuous enhancements that keep pace with the evolving landscape of network security and analysis.

Monitors all mission-critical infrastructure components, including services, applications, operating systems, network protocols and metrics, as well as network infrastructure. There are hundreds of third-party add-ons that allow for the monitoring of virtually all of your in-house services and applications. This dashboard provides a central view of all IT operations and business processes. The dashboards are a powerful way to quickly access third-party data and monitoring information at a glance. Views allow users to quickly access the most relevant information. Organizations can plan for infrastructure upgrades with automated, integrated trending graphs and capacity planning graphs before they are caught by surprise by outdated systems. IT staff, business stakeholders and end-users receive alerts via email or text message. They provide outage details so that they can resolve issues immediately.