Best Free Log Monitoring Tools of 2025

Around 25 million engineers work across dozens of distinct functions. Engineers are using New Relic as every company is becoming a software company to gather real-time insight and trending data on the performance of their software. This allows them to be more resilient and provide exceptional customer experiences. New Relic is the only platform that offers an all-in one solution. New Relic offers customers a secure cloud for all metrics and events, powerful full-stack analytics tools, and simple, transparent pricing based on usage. New Relic also has curated the largest open source ecosystem in the industry, making it simple for engineers to get started using observability.

Empower your current team to achieve enterprise-level security All-in-one SIEM solution with endpoint visibility, 24/7 monitoring and automated response. Reduce complexity, increase visibility, and speed up response time. We do the heavy lifting so you can get back to your daily routine. Blumira's out-of-the box detections, prefiltered alerts and response playbooks can help IT teams achieve real security value. Quick Deployment and Immediate Results: Integrates into your tech stack, fully deploys in hours, without any warm-up period. All-You-Can-Eat: Predictable pricing, unlimited data logging and full-lifecycle detection. Compliance Made Easy - Includes 1 year data retention, pre-built reports and 24/7 automated monitoring 99.7% CSAT support: Solution Architects to support product support, Incident Detection and Response Team for new detections and 24/7 SecOps Support

Cloud-based solution for observability that helps businesses manage and track workload and performance through a single dashboard. Monitor all the services you run on your cloud without compromising cost, granularity or scale. Groundcover is a cloud-native APM solution that makes observability easy so you can focus on creating world-class products. Groundcover's proprietary sensor unlocks unprecedented granularity for all your applications. This eliminates the need for costly changes in code and development cycles, ensuring monitoring continuity.

Monitor your servers, containers, and applications, in high-resolution and in real-time. Netdata collects metrics per second and presents them in beautiful low-latency dashboards. It is designed to run on all of your physical and virtual servers, cloud deployments, Kubernetes clusters, and edge/IoT devices, to monitor your systems, containers, and applications. It scales nicely from just a single server to thousands of servers, even in complex multi/mixed/hybrid cloud environments, and given enough disk space it can keep your metrics for years. KEY FEATURES: Collects metrics from 800+ integrations Real-Time, Low-Latency, High-Resolution Unsupervised Anomaly Detection Powerful Visualization Out of box Alerts systemd Journal Logs Explorer Low Maintenance Open and Extensible Troubleshoot slowdowns and anomalies in your infrastructure with thousands of per-second metrics, meaningful visualisations, and insightful health alarms with zero configuration. Netdata is different. Real-Time data collection and visualization. Infinite scalability baked into its design. Flexible and extremely modular. Immediately available for troubleshooting, requiring zero prior knowledge and preparation.

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 allows you to quickly find and solve problems. It scales them so that they can be derived either from on-premise, multi-cloud, or both. You now have the ability to use your entire IT stack and analytics to solve any problem, even those that are difficult to find. You can control and manage any technology and application with more than 500 plugins, including SAP, Oracle, Lotus or Citrix, Jboss, VMware, AWS and SQL Server.

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.

Better Stack allows you to see inside any stack and debug any issue. Visualize the entire stack. Aggregate all your logs to structured data and query it like a database using SQL. Search, store and centralize your logs in a flash. Do not worry about archiving and rehydration. Dashboards that combine metrics from multiple sources to create a beautiful summary. Monitor everything, from websites to servers. Schedule on-call rotatings, get actionable notifications, and resolve incidents quicker than ever. Be notified by a platform that monitors infrastructures better. Our 30-second check will give you a screenshot and a second by second timeline of the error. We verify each HTTP and ping-based event from at least three locations before we alert. No more false alarms! We have you covered, whether it's monitoring your web page, APIs, pings, POP3, SMTP, IMAP, DNS, or general network monitoring.

Checkmk is an IT monitoring system that allows system administrators, IT managers and DevOps teams, to quickly identify and resolve issues across their entire IT infrastructure (servers and applications, networks, storage and databases, containers, etc. Checkmk is used daily by more than 2,000 commercial customers worldwide and many other open-source users. Key product features * Service state monitoring with nearly 2,000 checks 'outside the box' * Event-based and log-based monitoring * Metrics, dynamic Graphing, and Long-Term Storage * Comprehensive reporting incl. Accessibility and SLAs * Flexible notifications and automated alert handling * Monitoring business processes and complex systems * Software and hardware inventory * Graphical, rule-based configuration and automated service discovery These are the top use cases * Server Monitoring * Network Monitoring * Application Monitoring * Database Monitoring * Storage Monitoring * Cloud Monitoring * Container Monitoring

Sumo Logic is a cloud-based solution for log management and monitoring for IT and security departments of all sizes. Integrated logs, metrics, and traces allow for faster troubleshooting. One platform. Multiple uses. You can increase your troubleshooting efficiency. Sumo Logic can help you reduce downtime, move from reactive to proactive monitoring, and use cloud-based modern analytics powered with machine learning to improve your troubleshooting. Sumo Logic Security Analytics allows you to quickly detect Indicators of Compromise, accelerate investigation, and ensure compliance. Sumo Logic's real time analytics platform allows you to make data-driven business decisions. You can also predict and analyze customer behavior. Sumo Logic's platform allows you to make data-driven business decisions and reduce the time it takes to investigate operational and security issues, so you have more time for other important activities.

WebSitePulse allows you to monitor your web assets remotely and independently. Uptime monitoring, website monitoring and server monitoring are some of the most popular services.

Built on the powerful Graylog Platform, Graylog Security is a leading threat detection, investigation, and response (TDIR) solution that streamlines cybersecurity operations with an intuitive workflow, seamless analyst experience, and cost efficiency. It helps security teams reduce risk and improve key metrics like Mean Time to Detect (MTTD) by optimizing threat detection coverage while lowering Total Cost of Ownership (TCO) through native data routing and tiering. Additionally, Graylog Security accelerates incident response by enabling analysts to quickly address critical alerts, reducing Mean Time to Response (MTTR). With integrated SOAR capabilities, Graylog Security automates repetitive tasks, orchestrates workflows, and enhances response efficiency, empowering organizations to proactively detect and neutralize cybersecurity threats.

SolarWinds®, Loggly®, is a cost-effective, hosted and scalable multi-source log management system that combines powerful search and analytics with extensive alerting, dashboarding and reporting to help you identify potential problems and reduce Mean Time to Fix (MTTR). LOGGLY AT A GLANCE >> Full-stack log aggregation, log monitoring and data analytics Log analytics provides context and patterns for events, as well as anomalies that can be used to gain deeper insights. >> Highly scalable to ingest large data volumes and enable quick searching across large and complicated environments >> Spot usage patterns with application, service, and infrastructure-aligned historical analysis of user, log, and infrastructure data >> Manage by exception: Identify variations from the norm with powerful log formatting capabilities and analytic search capabilities

Hybrid SIEM solutions combine real-time log monitoring with comprehensive system and network monitoring to provide users with a complete view of their servers, endpoints, and networks. The security event log normalization and correlation engine with descriptive emails alerts provides additional context. It presents cryptic Windows security incidents in easy-to-understand reports that provide insight beyond what is available as raw events. EventSentry's NetFlow component visualizes network traffic and can detect malicious activity. It also provides insight into bandwidth usage. EventSentry's ADMonitor component makes it easy to keep track of Active Directory changes. It records all changes to Group Policy objects and provides a complete user inventory that can be used to identify old accounts. There are many integrations and multi-tenancy options.

Open source is a passion for engineers. We supercharged the top open-source monitoring tools, including Jaeger, Prometheus and ELK, and combined them into a scalable SaaS platform. You can collect and analyze all your logs, metrics, traces and other data on one platform for end to end monitoring. You can visualize your data using customizable and easy-to-use monitoring dashboards. Logz.io's AI/ML human-coach automatically detects and corrects any errors or exceptions in your logs. Alerting to Slack and PagerDuty, Gmail and other endpoints allows you to quickly respond to new events. Centralize your metrics at any scale on Prometheus-as-a-service. Unified with logs, traces. Just three lines of code are required to add to your Prometheus config file to start forwarding your metrics and data to Logz.io.

StatusIQ is a status- and incident communication platform that allows you to communicate with customers in real time via status Pages, emails, and sms. It also lets you showcase the uptime of your IT resources and can be used to communicate with customers about scheduled maintenances and incidents. It is inevitable that there will be downtime. However, it doesn't have to be like this: wasting support agents or providing poor user experiences are not acceptable. Site24x7 StatusIQ makes it easy to communicate service disruptions, planned maintenance and real-time statuses with customers and end users. Proactive communication is a key responsibility in the event of a service disruption. Reliable, dedicated channels that can post updates can deflect support tickets and keep internal stakeholders informed. This can make downtime into an opportunity to improve the customer experience. Communicate early and often. Quickly acknowledge the problem and post the incident to your status page.

With a simple command, you can install the monitoring agent across all your servers without any complex configurations, enabling you to begin monitoring in just minutes. This tool allows you to oversee your server's infrastructure usage effectively, helping to avert downtime and performance challenges. A collection of over 40 plugins is readily available, covering essential metrics like CPU, Process, Network, NGiNX, Disk I/O, and many others. Server logs play a crucial role in diagnosing problems and preventing them from occurring within your infrastructure. You can utilize our sophisticated log search feature or take advantage of the live tail option for real-time insights. Are you aware of the cleanliness of your IP space? It's important to ensure your emails avoid being marked as spam. Our user-friendly control panel is customizable, offering an enhanced and enjoyable experience. Additionally, we can monitor various endpoints including HTTP(S), TCP, and ICMP (ping), ensuring you receive immediate alerts about any downtime affecting your web services. By leveraging these features, you can maintain optimal performance and reliability across your entire server environment.

SquaredUp is a unified observability portal. Say goodbye to blind spots and data silos. Using data mesh and cutting-edge data visualization, SquaredUp gives IT and engineering teams one place to see everything that matters. Bring together data from across your tech stack without the headache of moving the data. Unlike other monitoring and observability tools that rely on a data warehouse, SquaredUp leaves your data where it is, plugging directly into each data source to index and stitch the data together using a data mesh. Teams have one place to go where they can search, visualize, and analyze data across all their tools. Take control of infrastructure, application, and product performance with unified visibility. Learn more at squaredup.com What you get: > Cutting-edge data visualization > Access to 100+ data sources > Any custom data source via Web API > Multi-cloud observability > Cost monitoring > Unlimited dashboards > Unlimited monitors Key features: > Out-of-box dashboards > Simple, flexible dashboard designer > Real-time monitoring > High-level roll-up views > Object drill downs > Notifications (Slack, Teams, email, etc.) > SQL analytics

Zenduty offers a comprehensive platform for incident alerting, on-call management, and response orchestration that integrates reliability into your production operations seamlessly. It provides a unified view of the health status across all production activities, allowing teams to respond to incidents with a 90% faster turnaround and resolve issues in 60% less time. With the ability to implement customized, data-driven on-call schedules, you can maintain round-the-clock coverage for significant incidents. The platform facilitates the application of industry-leading incident response protocols, enabling quicker resolution through effective task delegation and collaborative triaging efforts. Furthermore, it automatically integrates your playbooks into each incident, ensuring a structured approach to each situation. You can also log incident-related tasks and action items to enhance the quality of postmortems and prepare for future occurrences effectively. By suppressing unnecessary alerts, your engineering and support teams can concentrate on the notifications that truly matter. Additionally, Zenduty boasts over 100 integrations with various tools such as application performance management (APM), log monitoring, error tracking, server monitoring, IT service management (ITSM), support systems, and security services, thereby enhancing the overall operational efficiency. This extensive connectivity ensures that teams can utilize their existing tools while streamlining their incident management processes.

Receive immediate notifications for errors and exceptions without needing to probe your users with extra queries. Muscula is an innovative error-logging tool that simplifies the process of gathering and examining errors within your website or application. Stop wasting valuable time sifting through server logs whenever an issue arises. Muscula offers a variety of plans, including free, business, and self-hosted options, all equipped with diverse features. You won’t need to provide a credit card to access the free plan, and you can begin using it right away, with the flexibility to upgrade whenever you choose. Logs play a crucial role in diagnosing both infrastructure and application errors. While some software may excel in select areas, Muscula stands out as a robust solution with a comprehensive feature set. It provides AI-powered explanations, leveraging technology from OpenAI, known for its renowned ChatGPT application. All errors are directed to your centralized dashboard, complete with efficient search and sorting functionalities. Say goodbye to the tedious task of scanning log lines for individual errors; instead, enhance your client satisfaction by resolving issues swiftly and effectively. With Muscula, you can streamline your error management process and ensure a smoother user experience.

Icinga is an internet monitoring system that checks the availability of your network resources and notifies users when there are outages. It also generates performance data for reporting. Icinga is flexible and extensible. It can monitor complex environments in multiple locations. Icinga 2 is the monitoring server and requires Icinga Web 2 on top in your Icinga Stack. You can manage the configuration with the Icinga Director or config management tools. Plain text is also available within the Icinga DSL. Find solutions, take action and become a problem-solver. Flexibility is key. Keep curious, stay passionate, and stay in the loop. Tackle your monitoring challenge. The Icinga stack consists of six core strengths that cover all aspects related to monitoring. You can get valuable insights, on-time notifications and eye-opening visuals as well as analytics. Icinga integrates easily into your systems and gives you the power of automating your tasks.

Intelligent Discovery simplifies the management of your AWS security protocols. Our top-tier tool for AWS vulnerability scanning and remediation enables rapid detection of potential threats while ensuring your infrastructure remains unaffected. By proactively identifying, addressing, and mitigating security risks through an intuitive interface, you can stay one step ahead of attackers seeking to exploit vulnerabilities. Features such as automated security auditing, security log management, and customizable controls enhance your operational efficiency significantly. In a dynamic and expanding environment, our integrated capacity, cost, and volume management tools help maintain performance without financial strain. As your organization grows, navigating compliance complexities becomes imperative; our clearly defined organizational rule sets and customization streamline this process. Additionally, regular and systematic monitoring of security logs, inventory, and change logs consolidates your inventory management into a single, efficient interface while ensuring robust oversight and control. This holistic approach not only strengthens your security posture but also reinforces your compliance efforts as you scale.

Developers can track errors and monitor performance to see what is important, find faster solutions, and continuously learn about their applications, from the frontend to backend. Sentry's performance monitoring can help you trace performance issues down to slow database queries and poorly performing api calls. Sentry's application performance monitoring is enhanced by stack traces. Identify performance issues quickly before they cause downtime. To see the entire distributed trace from end to end, you can identify the API call that is not performing well and highlight any errors. Breadcrumbs help you make application development easier by showing you the events that led to the error.

You can instantly centralize, monitor, analyze, and report logs from any platform at any volume. Log aggregation, custom-parsing, smart alarming, role-based access controls, real time search, graphs and log analysis are all seamlessly integrated in this suite of tools. Our cloud-based SaaS solution is ready in just two minutes. It collects logs from AWS and Docker, Heroku, Elastic, and other sources. Running Kubernetes? Log in to two kubectl commands. Simple, pay per GB pricing without paywalls or overage charges. Fixed data buckets are also available. Pay only for the data that you use on a monthly basis. We are Privacy Shield certified and comply with HIPAA, GDPR, PCI and SOC2. Your logs will be protected in transit and storage with our military-grade encryption. Developers are empowered with modernized, user-friendly features and natural search queries. We save you time and money with no special training.

AI-powered cloud observation platform. Middleware platform helps you identify, understand and resolve issues across your cloud infrastructure. AI will detect and diagnose all issues infra, application and infrastructure and provide better recommendations for fixing them. Dashboard allows you to monitor metrics, logs and traces in real time. The best and fastest results with the least amount of resources. Bring all metrics, logs and traces together into a single timeline. A full-stack platform for observability will give you complete visibility into your cloud. Our AI-based algorithms analyze your data and make suggestions for what you should fix. Your data is yours. Control your data collection, and store it in your cloud to save up to 10x the cost. Connect the dots to determine where the problem began and where it ended. Fix problems before users report them. The users get a comprehensive solution for cloud observability at a single location. It's also too cost-effective.

Apache Log4j is an adaptable, high-performance logging framework for Java, featuring an API, its implementation, and various components tailored to support a wide range of deployment scenarios. This project benefits from ongoing contributions by a dedicated team of volunteers and is backed by a large community. Log4j offers an extensive array of components designed for diverse applications, including appenders that can send logs to files, network sockets, databases, and SMTP servers. It also provides layouts capable of producing outputs in various formats such as CSV, HTML, JSON, and Syslog. Additionally, it includes filters that can be based on log event rates, regular expressions, scripts, and time, along with lookups that enable access to system properties, environment variables, and log event fields. The framework is engineered with a strong emphasis on reliability, featuring automatic configuration reloading that occurs seamlessly without any loss of log events during the process. When set up appropriately, Log4j can achieve outstanding performance with minimal impact on the Java garbage collector, ensuring it maintains its reliability. Furthermore, its flexible architecture allows developers to customize logging behavior to fit their specific needs effectively.