Best Free Network Troubleshooting Software of 2025

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 an all-encompassing solution for network troubleshooting, designed to swiftly pinpoint and rectify network problems. It offers real-time oversight and notifications for various network devices, assisting IT personnel in identifying faults, congestion, and performance irregularities. Equipped with functionalities such as root cause analysis, comprehensive performance analytics, and customizable dashboards, OpManager facilitates effective troubleshooting by delivering profound insights into the state and performance of the network. Its user-friendly interface simplifies navigation and analysis, ensuring that network issues are resolved quickly, thereby reducing downtime and sustaining peak performance.

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.

Obkio is a simple Network Monitoring and Troubleshooting SaaS solution that allows users to continuously monitor the health of their network and core business applications to improve the end-user experience. Obkio identifies the cause of intermittent network problems, VoIP, video, and applications slowdown in seconds so you can troubleshoot before they affect your end-users. Deploy network monitoring Agents at strategic locations in a company's offices or network destinations such as data sites, remote sites, external client sites, or public or private clouds to continuously monitor performance using synthetic traffic exchanged every 500ms. Obkio continuously tests and measures network metrics, such as latency, jitter, packet loss, quality of service and customer experience via QoE (Quality of Experience). The app alerts you as soon as a problem occurs or even if there are signs that a failure is about to happen. Not only does it alert you and pinpoint the source of the issue, but it also allows you to go back in time to complete a diagnosis.

Sematext Cloud provides all-in-one observability solutions for modern software-based businesses. It provides key insights into both front-end and back-end performance. Sematext includes infrastructure, synthetic monitoring, transaction tracking, log management, and real user & synthetic monitoring. Sematext provides full-stack visibility for businesses by quickly and easily exposing key performance issues through a single Cloud solution or On-Premise.

Video quality control tool. Software solution for UDP stream quality control and measurement of QoS in all segments of distributed networks. Probes available 24/7. You have complete control over your network. It takes less than 30 minutes to start monitoring your streams. You can save on equipment and network maintenance costs. Web interface offers all the benefits of web interface, including a user-friendly data layout. Continual quality control and rapid correction of violations ensure a stable customer base. It is available as a cloud-based service or as a standalone solution for local networks. Elecard Boro software probes monitor packet loss, video freeze, SCTE35 labels for UDP/HLS/DASH/RTP/HTTP. This solution allows for fast and economical monitoring of content delivery networks, and localization of most common violations.

Accelerate the transition from data to tangible business results with Splunk. Splunk Enterprise streamlines the process of gathering, analyzing, and leveraging the hidden potential of the vast data created by your technological framework, security measures, and enterprise applications—equipping you with the knowledge necessary to enhance operational efficiency and achieve business objectives. Effortlessly gather and index log and machine data from a variety of sources. Merge your machine data with information stored in relational databases, data warehouses, as well as Hadoop and NoSQL data repositories. The platform's multi-site clustering and automatic load balancing capabilities are designed to accommodate hundreds of terabytes of data daily, ensuring quick response times and uninterrupted access. Customizing Splunk Enterprise to suit various project requirements is straightforward with the Splunk platform. Developers have the flexibility to create bespoke Splunk applications or incorporate Splunk data into existing applications. Furthermore, applications developed by Splunk, our collaborators, and the community enhance and expand the functionalities of the Splunk platform, making it a versatile tool for organizations of all sizes. This adaptability ensures that users can extract maximum value from their data in a rapidly changing business landscape.

PingPlotter monitors and visualizes objective internet performance metrics over time to make network troubleshooting easy. Chart objective metrics like latency, packet loss, and jitter over time and show ISPs, IT teams, or other users exactly when and where issues occur. Get notified of network problems automatically with customizable alerts and REST API capabilities. Get real-time feedback on connection problems to find hard-to-notice patterns other solutions can't detect. Quickly find and diagnose the source of internet lag, server disconnects, and other downtime. Save the IT team’s time with remote monitoring, an automated troubleshooting assistant and connection quality dashboard (PingPlotter Cloud only), or test connections from a single computer with PingPlotter for Desktop.

CySight’s revolutionary Actionable Intelligence, trusted by Fortune 500 globally, enables organizations with the most cost-effective and secure way to tackle the increasing density, complexity, and expanse of modern physical and cloud networking. Deploying cyber network intelligence, CySight empowers network and security teams to substantially accelerate incident response by eliminating blindspots, analyzing network telemetry to discover anomalies, uncover cyber-threats, and quantifying asset usage and performance. CySight’s Dropless Collection method enables unsurpassed visibility of network Big-Data which is retained in the smallest footprint, accelerating machine learning, artificial intelligence and automation to fully utilize all metadata no matter the amount, size, or type.

Optigo Visual Networks is our next generation OT network monitoring and troubleshooting software. OptigoVN’s robust BACnet Monitoring gives you deep OT visibility with over 28 different network diagnoses.

IBM NS1 Connect offers premium, authoritative DNS & advanced traffic steering to deliver the high-performance, reliable, secure network connectivity that businesses need to meet increasingly sophisticated customer expectations through our: Global anycast network: Providing massive capacity & scale needed to keep users reliably connected across the world. API-first Architecture: Easily integrate & automate all NS1 Connect function. HTTPS Redirects: Manage every element of your HTTPS redirects from one platform. GSLB and RUM-based traffic steering: Balance loads at a global scale & reduce latency with near-real-time device performance data DDoS Attack Protection: Ensuring sufficient capacity to absorb traffic spikes & controls in place to guard against automated “junk” queries. NS1 Connect offers add-on options to suite your business needs including: DNS Insights: Providing the data you need to quickly identify & deal with misconfigurations impacting application performance. Dedicated DNS: Stay up & running with a native secondary DNS resolution infrastructure for seamless continuity of operations. DNS Traffic Steering: Optimize connections to applications, services & content based on geography, RUM data, load and more.

Syvir Cloud offers a sophisticated network monitoring software-as-a-service (SaaS) platform designed for enterprises, delivering insightful data through user-friendly dashboards while offering diagnostic reports that enhance the availability and maximize the uptime of network endpoints. This solution allows you to monitor the diagnostics of your endpoints effectively, pinpoint and address any issues that arise, and receive immediate alerts when problems occur with your endpoints. With such capabilities, organizations can ensure a more reliable network performance and maintain operational continuity.

XPM is a commercial quality and enterprise level performance management/monitoring and traffic analysis solution. XPM is a high performance enterprise product based upon Linux that supports continuous operation from 7*24*365. It may not be appropriate for all users, but it is more suitable for enterprises who require higher IT service quality. XPM monitoring objects include: 1. Applications using HTTP protocol 2. 2. Databases (Oracle MySQL, MS-SQL Server, and MySQL); 3. URL Transaction 4. 4. Awards of XPM ITSS 2018 Innovation Award ITSS is a department of Ministry of Industry and Information Technology of China. Please be aware that: This is the downloadable version of XPM Standard, which can analyze approximately 1 Gbps traffic in real-time and only supports X86 server installation. Contact us by email if you require vProbe XPM to monitor virtual machines traffic or XPM H version over 1Gbps.

Wireshark stands as the leading and most widely utilized network protocol analyzer in the world. This tool allows users to observe the intricate details of their network activity and has become the standard reference point for various sectors, including commercial enterprises, non-profit organizations, government bodies, and academic institutions. The continued advancement of Wireshark is fueled by the voluntary efforts of networking specialists from around the world, originating from a project initiated by Gerald Combs in 1998. As a network protocol analyzer, Wireshark enables users to capture and explore the traffic traversing a computer network interactively. Known for its extensive and powerful capabilities, it is the most favored tool of its type globally. It operates seamlessly across a range of platforms, including Windows, macOS, Linux, and UNIX. Regularly employed by network professionals, security analysts, developers, and educators worldwide, it is accessible without cost as an open-source application and is distributed under the GNU General Public License version 2. Additionally, its community-driven development model ensures that it remains up-to-date with the latest networking technologies and trends.

Cisco Network Assistant offers a user-friendly interface and task-oriented menu that streamlines the management of both wired and wireless networks for up to 80 devices. This complimentary tool is designed to facilitate the implementation of standard services across various Cisco devices, including switches, routers, wireless controllers, and access points. Users can access vital product information, such as warranty details, contract statuses, advisories, and end-of-life notifications, through a direct integration with Cisco Active Advisor, which automatically collects data from devices managed by the Network Assistant. The software provides network administrators with a comprehensive overview of their network, allowing them to effectively utilize its functionalities for small to midsize businesses or branch locations. Additionally, it supports network discovery and visually represents the topology, while also enabling configuration management of Cisco products tailored for small and medium enterprises. This ensures that administrators can easily monitor and maintain their network infrastructures with greater efficiency and control.

The EC-Engineer software tool is used to configure and diagnose EtherCAT®. This single tool allows you to perform all engineering and diagnosis tasks quickly and easily. It is essential for customers to have a smooth experience with EtherCAT®, including configuration and diagnosis. The integrated EtherCAT master allows the slave devices to be scanned and controlled. Get more details on this page: https://acontis.com/en/ecengineer.html Register for an free trail here: https://acontis.com/en/eceval.html

VPS+ can be used as an integrated development environment or a powerful virtual layer network protocol IDE. 1) Rapid prototyping and deployment protocol stacks in data networks solutions, including IoT or VoIP 2) Quality Assurance to validate network quality and device quality 3) Simulation of impaired network conditions and devices in controlled fashion 4) Generating any type of traffic under full control VPS+ supports many state-of the-art technologies, including: 1) Protocol Emulation: L2, 3, L4, and Application layer protocols. 2) RTC and VoIP signaling via SIP or SIPs 3) RTC and VoIP media via RTP or SRTP 4) Emulation and support for media players, media recorders and camera, microphone, text to speech (TTS), and automatic speech recognition(ASR). 5) Speech codecs 6) Video codecs 7) Tone generation, detection. 8) IoT sensor emulation and actuator emulation 9) IoT CoAP support and HTTP support 10) Impairment insertion at every layer; loss and late