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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.

fixa
  • Overview
  • Launches

fixa helps you run simulated tests, analyze production calls, fix bugs in your voice agents. oh, and we're fully open source. get started for free - no demos, no commitments, only pay for what you use.

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  • Overview
  • Reviews
  • Launches

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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Arch
  • Overview
  • Launches

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.

Warestack
  • Overview
  • Reviews
  • Launches

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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OpenLIT
  • Overview
  • Reviews
  • Launches

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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ManageEngine
  • Overview
  • Reviews
  • Launches

ManageEngine crafts the industry's broadest suite of IT management software. We have everything you need—more than 90 products and free tools—to manage all of your IT operations, from networks and servers to applications, service desk, Active Directory, security, desktops, and mobile devices.

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Kafbat UI
  • Overview
  • Reviews
  • Launches

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

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  • Overview
  • Reviews
  • 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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Obserware
  • Overview
  • Launches

Obserware is an advanced interactive system monitoring utility for GNU/Linux distributions made with, by and for free and open-source software technologies. Download now for free to take a peek under the hood of your system and see how it performs!

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SigNoz
  • Overview
  • Shoutouts
  • Reviews
  • Launches

SigNoz is an open-source alternative to DataDog. We help developers find issues in the software they run on cloud and solve them quickly. Run SigNoz in your infrastructure and get your application monitoring setup at 10x lower cost

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