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Open-source log management tools provide cost-effective, customizable approaches for collecting and analyzing log data. They help teams quickly identify patterns, spot anomalies, and resolve issues. With numerous options available, it's important to understand their strengths and limitations. This article examines the top open-source log management tools in 2025, focusing on their capabilities, performance, and best use cases.

Observability metrics provide insights into the performance, behavior, and health of applications, systems, and infrastructure — enabling observability practices, which is how a system’s internal state is understood by examining its data. As organizations continue to collect more and more data, observability metrics are a key telemetry signal for observability.

Basic console logging is a good starting point for debugging and understanding an app. For larger, more complex apps, it’s helpful to include additional information and persist logs. In this guide, you’ll learn how to create and view logs in React Native and how to create and save custom logs to a file. We’ll focus on JavaScript logs.

In a rapidly evolving business landscape, understanding and responding to customer needs is not just an advantage — it's a necessity. At Splunk, we've taken a bold step by applying a product manager mindset to our Customer Advisory Board (CAB) program, transforming it into a dynamic platform for both customers and our product teams.

You may be surprised that delivering observability is a journey and isn’t about observing everything at once — it’s about driving outcomes like proactive detection, faster troubleshooting, and aligning with business priorities. If you’ve followed this series, you’ve already taken steps to.

In any observability stack, logs are essential for uncovering insights, troubleshooting issues, and ensuring system health. However, managing the security of logged data presents its own challenges, especially when it comes to preventing sensitive information, like API keys and credentials, from slipping into logs. Secrets can originate from a variety of sources, and it’s often challenging to predict which applications or services might inadvertently expose sensitive information.