Best System Monitoring Software for Linux

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 system monitoring tool that provides comprehensive oversight of critical IT infrastructure, including servers, network devices, and applications. It delivers real-time insights into system performance, tracking key metrics such as CPU usage, memory consumption, disk space, and network activity. With proactive alerting and automated fault detection, OpManager enables IT teams to quickly identify and resolve issues, ensuring maximum system uptime and reliability. Its customizable dashboards and detailed reporting features enhance visibility and facilitate efficient resource management, making it an essential solution for maintaining optimal system performance.

NinjaOne delivers continuous system monitoring across devices and infrastructure. Metrics such as CPU, memory, disk, and network utilization are tracked in real time. Customizable alerts notify technicians when thresholds are exceeded. Historical performance data supports troubleshooting and capacity planning. Automated remediation reduces the need for manual intervention. Reports provide insight into overall system health. NinjaOne helps IT teams ensure stable and efficient system performance.

Atera, the first and only Agentic AI platform for IT management, offers IT teams and MSPs a digital workforce of AI agents to preemptively and autonomously manage their entire IT operations. Its all-in-one platform combines RMM, helpdesk, ticketing, and automation to reduce downtime, improve SLAs, and free IT teams to focus on strategic work over mundane tasks. At the core of Atera’s platform are two powerful AI agents built to enhance every layer of IT operations. AI Copilot helps technicians troubleshoot devices, run diagnostics, and generate actionable solutions in real time. IT Autopilot delivers 24/7/365, autonomously resolving Tier-1 issues and reducing IT workload by up to 40%. It acts like a personal AI technician for every employee, freeing your team to focus on what really matters. Trusted by 13K+ customers in over 120 countries, Atera scales with your needs while maintaining the highest security and compliance standards.

FirstWave’s NMIS is a complete network management system that provides fault, performance, and configuration management, performance graphs, and threshold alerts. Business rules allow for highly granular notification policies with many types of notification methods. NMIS consolidates multiple tools into one system, ready for Network Engineers to use. Scalable, flexible, open, and simple to implement and maintain, NMIS is the Network Management System that underpins the operations of over one hundred thousand organizations worldwide – making it one of the most widely used open-source Network Management Systems in the world today. FirstWave 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.

With more than 50,000 customer installations across the five continents, Pandora FMS is a truly all-in-one monitoring solution, covering all traditional silos for specific monitoring: servers, networks, applications, logs, synthetic/transactional, remote control, inventory, etc. Pandora FMS gives you the agility to find and solve problems quickly, scaling them so they can be derived from any source, on-premise, multi cloud or both of them mixed. Now you have that capability across your entire IT stack and analytics to find any problem, even the ones that are hard to find. Thanks to more than 500 plugins available, you can control and manage any application and technology, from SAP, Oracle, Lotus, Citrix or Jboss to VMware, AWS, SQL Server, Redhat, Websphere, etc.

Datadog is the monitoring, security and analytics platform for developers, IT operations teams, security engineers and business users in the cloud age. Our SaaS platform integrates and automates infrastructure monitoring, application performance monitoring and log management to provide unified, real-time observability of our customers' entire technology stack. Datadog is used by organizations of all sizes and across a wide range of industries to enable digital transformation and cloud migration, drive collaboration among development, operations, security and business teams, accelerate time to market for applications, reduce time to problem resolution, secure applications and infrastructure, understand user behavior and track key business metrics.

IT performance monitoring is not about monitoring CPU, memory and network resources any more. eG Enterprise makes user experience the centerpiece of your IT monitoring and management strategy. With eG Enterprise, you can measure the digital experience of your users, get deep visibility into the performance the entire application delivery stack — from code to user experience, and data center to cloud — from a single pane of glass, correlate performance across domains and pinpoint the root-cause of problems proactively. Machine learning and analytics capabilities embedded in eG Enterprise enable IT teams make intelligent decisions regarding right-sizing, optimization and planning for future growth. The result: happy users, enhanced productivity, improved IT efficiency and tangible business ROI. eG Enterprise is available for installation on-premise and as a SaaS solution. Start a free trial today.

N‑able N-sight RMM® is a cloud-based IT solution that makes it easy for MSPs to deliver valuable technology services within hours, not weeks or months. Clear graphical dashboards place alerts front and center so you can focus on what needs you most. Built-in remote access and security features help you support and protect from day one. And when you’re ready, grow your business with additional security layers and add-ons services to expand your offering. N‑able N-sight RMM features include remote access, network path visualization, automated monitoring and maintenance, prescriptive data analytics, data-breach risk intelligence, and more. N‑able N-sight RMM is also available for download as Android and iOS mobile apps to allow users to manage issues anywhere.

Checkmk is a comprehensive IT monitoring system that enables system administrators, IT managers, and DevOps teams to identify issues across their entire IT infrastructure (servers, applications, networks, storage, databases, containers) and act quickly to resolve them More than 2,000 commercial customers and many more open source users worldwide use Checkmk daily. Key product features: • Service state monitoring with almost 2,000 checks 'out of the box' • Log and event-based monitoring • Metrics, dynamic graphing, and long-term storage • Comprehensive reporting incl. availability and SLAs • Flexible notifications and automated alert handling • Monitoring of business processes and complex systems • Hardware and software inventory • Graphical, rule-based configuration, and automated service discovery Top use cases: • Server Monitoring • Network Monitoring • Application Monitoring • Database Monitoring • Storage Monitoring • Cloud Monitoring • Container Monitoring

CloudRadar is a professional monitoring solution. It monitors public and private servers, networks and network devices, clouds and websites in one application for availability, uptime, process and performance metrics. CloudRadar promises fast deployment with guided configuration and best-practice alert types pre-configured in its complete alerting engine. Outages and issues are immediately alerted with CloudRadar's notification feature, using 7 different channels to choose from to deliver alerts. Users can completely customize alert thresholds or set up unlimited new checks per host with a complete team management capability. With a focus on delivering a radically simple, uncluttered interface encompassing all critical monitoring metrics, CloudRadar is tool that is built for System Admins and IT managers - allowing them to monitor their entire infrastructure in one unified, easy-to-use interface with deep insights into office, remote or cloud resources across the stack.

Full-stack monitoring platform for your software and hardware. InsightCat is a full-stack infrastructure monitoring solution to search, analyze, and aggregate system metrics in one place. The solution was developed to be intuitive and cover the most vital requests of DevOps, System administrators, SecOps, and IT specialists related to infrastructure monitoring, security, log management, etc. The solution allows you to perform: Infrastructure monitoring. Detect anomalies within your infrastructure to eliminate them as quickly as possible and prevent the system from repeating similar issues. Synthetic monitoring. Monitor your web services around the clock and be aware in advance of the critical downtimes if they occur. Log management. Work with your log data and keep up with the root cause of any software error, within one place. Smart alerting and escalation. Set up the flexible alerting system to keep the team informed if any spikes, errors or unordinary behavior.

Netreo is the most comprehensive full stack IT infrastructure management and observability platform. We provide a single source of truth for proactive performance and availability monitoring for large enterprise networks, infrastructure, applications and business services. Our solution is used by: - IT Executives to have full visibility from the business service right down into the infrastructure and network that supports it. - IT Engineering departments as a decision support system for capacity planning, and architecting modern solutions. - IT Operations teams for real time visibility into what is failing in their environment, what bottlenecks exist and who it is affecting. We provide all of these insights for systems and vendor mixes in large heterogeneous and constantly evolving environments. We have an extensive and growing list of supported vendors (over 350 integrations) including network vendors, servers, storage, virtualization, cloud platforms and others.

Nagios Core is the monitoring and alerting engine that serves as the primary application around which hundreds of Nagios projects are built. Nagios Core serves as the basic event scheduler, event processor, and alert manager for elements that are monitored. It features several APIs that are used to extend its capabilities to perform additional tasks, is implemented as a daemon written in C for performance reasons, & is designed to run natively on Linux/*nix systems. Alerts with escalation capabilities are delivered to IT staff via email and SMS to ensure fast detection of outages. Event handlers can automatically restart failed applications, servers, devices, and services when problems are found. Gain a centralized view of your entire IT operations and review detailed status information through the web interface.

CruzOC is a scalable multi-vendor network management and IT operations tool for robust yet easy-to-use netops. Key features of CruzOC’s integrated and automated management include performance monitoring, configuration management, and lifecycle management for 1000s of vendors and converging technologies. With CruzOC, administrators have implicit automation to control their data center operations and critical resources, improve network and service quality, accelerate network and service deployments, and lower operating costs. The result is comprehensive and automated problem resolution from a single-pane-of-glass. Cruz Monitoring & Management. NMS, monitoring & analytics -- health, NPM, traffic, log, change. Automation & configuration management -- compliance, security, orchestration, provisioning, patch, update, configuration, access control. Automated deployment -- auto-deploy, ZTP, remote deploy. Deployments available on-premise and from the cloud.

Telex is a powerful real-time notification system designed to help users monitor their application performance, streamline team communication, and integrate seamlessly with third-party tools. With features like webhook notifications, collaboration channels, and advanced monitoring tools, Telex ensures users stay informed about logs, events, and system performance at all times. Core Products Telex offers a suite of monitoring and notification tools, including: Application Performance Monitoring (APM) – Track app efficiency in real-time. Server Monitoring – Keep an eye on server health and uptime. Cloud Monitoring – Ensure cloud-based services run smoothly. Database Monitoring – Detect and resolve database issues quickly. Network Monitoring – Monitor network traffic and performance. Log Monitoring – Analyze system logs for better debugging. Webhook Testing – Validate and troubleshoot webhooks.....

Argus is a system and network monitoring application. It will monitor nearly anything you ask it to monitor (TCP + UDP applications, IP connectivity, SNMP OIDS, Programs, Databases, etc). It presents a nice clean, easy to view web interface that will keep both the managers happy (Red Bad. Green Good.) and the techs happy ("Ah! that's what the problem is"). It can send alerts numerous ways (such as via pager) and can automatically escalate if someone falls asleep.