Best IT Alerting Software for Linux

Grafana Labs provides an open and composable observability stack built around Grafana, the leading open source technology for dashboards and visualization. Recognized as a 2025 Gartner® Magic Quadrant™ Leader for Observability Platforms and positioned furthest to the right for Completeness of Vision, Grafana Labs supports over 25M users and 5,000+ customers—including Bloomberg, Citigroup, Dell Technologies, Salesforce, and TomTom. The LGTM Stack combines Grafana for visualization, Mimir for metrics, Loki for logs, and Tempo for traces. Grafana Cloud, the fully managed offering, accelerates time to value with turnkey solutions for Kubernetes monitoring, incident response, load testing, and more. It features Adaptive Metrics for cost-efficient data aggregation and native OpenTelemetry support. Built on open standards, Grafana empowers teams to visualize and correlate data from any source—without vendor lock-in—whether self-managed or in the cloud. Grafana Cloud scales with you, securely.

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.

With over 11,000 installations Business LOG is the most requested tool by companies looking for a flexible and efficient log management suite. Available in “On-Premise” or “SaaS” Versions, with Agent Methods and Log Collection Agent less. Business LOG provides complete log analysis, reports and alerts, a powerful log search engine and a flexible log storage option.

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.

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

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.

Appchkr is an uptime monitoring, alerting, and reporting family of software featuring advanced, high power, general purpose types for large networks and server farms to simple, basic types specialized for small businesses and individual websites. Free forever for 10 targets. Hands-free background operation. Swift setup, fast alerts, unmatched feature set and performance/price ratio. Runs on any MSWindows or Linux version. Checks both LANs and WANs, intranet and internet, both inside and outside your network. Worldwide distribution and support. Light on your time, your network, and your budget. Types specialized for databases, facilities management, security, and QA/QC/Certification/test systems. Integrates with Slack and Pagerduty. Offers public status pages. Integrated diagnostic tools help shorten and prevent downtime. Controlled via web browser and/or command line, interchangeably. Auto-flex option minimizes cost. Extensive documentation.

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.

Bleemeo is a Cloud Monitoring Platform that allows DevOps and IT teams to monitor their infrastructure from the servers to the applications. It only takes 30 seconds to get a complete live picture of your infrastructure. Our agent discovers services and creates checks and metrics. Dashboards and notification rules for servers and services are automatically created. Android and iOS applications are available. Kubernetes, containers, and elastic infrastructures are fully supported. Deploying a robust, scalable monitoring solution can be time-consuming. At Bleemeo, we focus on making users life easier. Common operating systems and services are auto-detected, default dashboards and notification rules are created. All you need is connect your agent and then customize for your needs. On hosts running Bleemeo monitoring agent, common services are automatically detected and dashboards with services health checks and metrics are automatically generated.

Uptime Infrastructure Monitor helps IT administrators to unify performance monitoring and optimization of IT infrastructure. Unlike its competition, it provides monitoring of a broad range of platforms and applications, ability to set service-level agreements, and support of both agent and agentless monitoring.

Centreon is a global provider of business-aware IT monitoring for always-on operations and performance excellence. The company’s holistic, AIOps-ready platform is designed for today’s complex, distributed hybrid cloud infrastructures. Centreon monitors the complete IT Infrastructure from Cloud-to-Edge for a clear and comprehensive view. Centreon removes blind spots, monitoring all equipment, middleware and applications that are part of modern IT workflows, from on-premise legacy assets to private and public cloud environments, all the way to the edge of the network, where smart devices and customers combine to create business value. Centreon is constantly current, able to support the most dynamic environments. With auto-discovery capabilities it can keep track of Software-Defined Network (SDN) elements, AWS or Azure cloud assets, Wi-Fi access points or any other component of today’s agile IT infrastructure.

is an open-source, MIT licensed, monitoring and alerting system by Stack Exchange. It has an expressive domain specific language for evaluating alerts and creating detailed notifications. It also lets you test your alerts against history for a faster development experience. Use Bosun's flexible expression language to evaluate time series in an exacting way. Save time by testing alerting against historical data and reduce alert noise before an alert goes into production. Runs on Linux, Windows, Mac, or any operating system supported by Go. Supports arbitrary dimensions (not just host based), aggregations, and automatically incorporating new tags as they appear. Scollector auto detects new services and starts sending metrics immediately; properly designed alerts will apply to these new services which reduces maintenance. Use our agent scollector to get monitoring of Windows, Linux, and many common applications.

RapidAlerts is an internal communications solution that streamlines the way businesses communicate with their teams. Our software ensures that critical information is delivered quickly and effectively across multiple channels, including desktop alerts, scrolling tickers, mobile employee apps, corporate screensavers, and more. With customizable features like wallpaper and lockscreen management, businesses can engage with their employees in new and innovative ways. RapidAlerts provides a reliable and flexible solution to communicate critical events to team members, no matter where they are or what device they are using.