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The best observability tools in 2025

What are observability tools?

Observability tools enable organizations to gain deep insights into the performance and health of their applications, infrastructure, and services. These tools collect and analyze telemetry data—like logs, metrics, and traces—to help teams monitor, troubleshoot, and optimize complex systems in real time. Observability goes beyond traditional monitoring by allowing engineers to ask ad-hoc questions about system behavior, pinpoint root causes of issues, and understand how different components interact.

  • Overview
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  • Launches

Zipy is a debugging platform with user session replay, frontend and network monitoring in one. ⏰ Install in a min ▶️ Replay error sessions in real time 🚀 Dev tools, Stack Trace, Console & Network Logs. Have questions? Ask the Maker

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Grafana
  • Overview
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Grafana is the open source analytics & monitoring solution for every database

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Warestack
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Warestack enforces teams follow best practices across the DevOps lifecycle by flagging skipped checks, blocking risky workflows, and standardizing processes to bridge gaps in toolchains. With Warestack, teams minimize lead times and transform fragmented workflows into predictable, reliable pipelines.

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Kafbat UI
  • Overview
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Kafbat UI is a free, open-source web UI to monitor and manage Apache Kafka clusters

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  • Overview
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B2B engineers deserve better feature flags. Bucket is focusing on what you need to build and release better features in B2B SaaS.

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Datadog, Inc.
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Datadog is a monitoring service for cloud-scale applications, providing monitoring of servers, databases, tools, and services, through a SaaS-based data analytics platform.

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Proxyman
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Best-in-class native macOS app to Capture, Decrypt, and Mock your HTTP/HTTPS with all advanced debugging tools. Support macOS, iOS, Windows and Linux.

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Scout Monitoring
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Scout saves you time by highlighting performance problems, filtering out noise, and eliminating guess work. Scout automatically tracks and surfaces N+1 database queries, sources of memory bloat, and performance abnormalities for Ruby/Rails, Python/Django, and Elixir.

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OpenLIT
  • Overview
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OpenLIT an open source product that helps developers build and manage AI apps in production, effectively helping them improve accuracy. As a self-hosted solution, it enables developers to experiment with LLMs, manage and version prompts, securely manage API keys, and provide safeguards against prompt injection and jailbreak attempts. It also includes built-in OpenTelemetry-native observability and evaluation for the complete GenAI stack (LLMs, vector databases, and GPUs).

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Arch
  • Overview
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Arch is an intelligent gateway for agents. An AI-native, open source infrastructure project to help developers build fast, hyper-personalized agents in mins. Arch is engineered with specialized (fast) LLMs to transparently integrate prompts with APIs (function calling), to add safety, routing and observability features in secs - so that developers can focus on what matters most.