Top 23 Go Observability Projects

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1. cilium

   1 42 24,485 10.0 Go

   eBPF-based Networking, Security, and Observability

   

   Project mention: War Story: Debugging a Kafka 4.0 Consumer Lag Spike During a Product Launch Using Cilium 1.17 and Datadog 2026 | dev.to | 2026-04-28

   This adds less than 2% overhead to your node’s CPU usage but exposes 14 Kafka-specific eBPF metrics that are critical for debugging lag. We’ve found that 72% of Kafka 4.0 lag incidents we’ve responded to in 2026 stem from node-level network policy issues that only eBPF can detect. If you’re using a different CNI, you can still use Cilium’s standalone eBPF probe https://github.com/cilium/cilium/tree/v1.17.2/contrib/kafka-probe to get these metrics without replacing your entire CNI. Always validate that kafka.heartbeat_drops_total is 0 in staging before every launch.

2. SaaSHub

   www.saashub.com featured

   SaaSHub - Software Alternatives and Reviews. SaaSHub helps you find the best software and product alternatives

   

3. jaeger

   2 125 22,875 9.8 Go

   CNCF Jaeger, a Distributed Tracing Platform

   

   Project mention: Scaling Shopify Webhooks to Handle Millions of Events: A Practical Guide | dev.to | 2026-06-04

   Distributed Tracing with Jaeger

4. VictoriaMetrics

   3 115 17,139 9.9 Go

   VictoriaMetrics: fast, cost-effective monitoring solution and time series database

   

   Project mention: VictoriaMetrics VS arc - a user suggested alternative | libhunt.com/r/VictoriaMetrics | 2026-04-26

5. kubesphere

   4 11 16,960 7.6 Go

   The container platform tailored for Kubernetes multi-cloud, datacenter, and edge management ⎈ 🖥 ☁️

   

   Project mention: kubesphere VS kite - a user suggested alternative | libhunt.com/r/kubesphere | 2025-07-31

6. thanos

   5 77 14,098 9.4 Go

   Highly available Prometheus setup with long term storage capabilities. A CNCF Incubating project.

   

   Project mention: The Deletion of Docker.io/Bitnami | news.ycombinator.com | 2025-08-27

   Thank you thanos-io: https://github.com/thanos-io/thanos/issues/8381#issuecomment...

7. nightingale

   6 4 13,071 9.6 Go

   Nightingale is to monitoring and alerting what Grafana is to visualization.

   

8. kubeshark

   7 19 11,949 8.9 Go

   eBPF-powered network observability for Kubernetes. Indexes L4/L7 traffic with full K8s context, decrypts TLS without keys. Queryable by AI agents via MCP and humans via dashboard.

   

   Project mention: API Traffic Analyzer for Kubernetes | news.ycombinator.com | 2026-03-09

9. pyroscope

   8 8 11,489 9.7 Go

   Continuous Profiling Platform. Debug performance issues down to a single line of code

   

   Project mention: OpenTelemetry Profiles Enters Public Alpha | news.ycombinator.com | 2026-03-26

10. coroot

    9 55 7,732 9.3 Go

    Coroot is an open-source observability and APM tool with AI-powered Root Cause Analysis. It combines metrics, logs, traces, continuous profiling, and SLO-based alerting with predefined dashboards and inspections.

    

    Project mention: Zero-config Golang Heap Profiling | dev.to | 2026-04-30

    Coroot is an Apache 2.0 open source platform that simplifies observability with no-code configuration. The Coroot node-agent already collects CPU profiles for any process on the node using eBPF, with zero integration from the application side. For Java, we dynamically inject async-profiler into the JVM to get memory and lock profiles. But Go processes were still a blind spot for non-CPU profiling unless the app exposed a pprof endpoint and the cluster-agent scraped it.

11. calico

    10 23 7,248 10.0 Go

    Cloud native networking and network security

    

    Project mention: ^ != << | dev.to | 2026-03-06

    Now, let's take a look at another example of this diagnostic rule in action. This time, we found an error in the Calico project.

12. opentelemetry-collector

    11 96 7,130 9.9 Go

    OpenTelemetry Collector

    

    Project mention: The Complete Guide to AWS Service Monitoring with OpenTelemetry (2026) | dev.to | 2026-05-19

    OpenTelemetry (OTel) is a CNCF-graduated open-source project. It provides a unified standard for collecting metrics, logs, and traces from distributed systems. At its core, OTel consists of three things:

13. kube-state-metrics

    12 37 6,138 9.1 Go

    Add-on agent to generate and expose cluster-level metrics.

    

14. mimir

    13 41 5,125 10.0 Go

    Grafana Mimir provides horizontally scalable, highly available, multi-tenant, long-term storage for Prometheus.

    

    Project mention: Top Open-Source Data Engineering Tools- Unravelling the Best in 2026 | dev.to | 2025-12-10

    Mimir

15. flipt

    14 21 4,822 9.8 Go

    Enterprise-ready, Git native feature management solution

    

16. uptrace

    15 37 4,218 7.8 Go

    Open source APM: OpenTelemetry traces, metrics, and logs

    

    Project mention: OpenTelemetry Beego monitoring [otelbeego] | dev.to | 2025-11-10

    Uptrace is an open source APM for OpenTelemetry that supports distributed tracing, metrics, and logs. You can use it to monitor applications and troubleshoot issues. For more details, see the OpenTelemetry Go guide and compare with top APM tools.

17. mtail

    16 23 4,016 1.9 Go

    extract internal monitoring data from application logs for collection in a timeseries database

    

18. odigos

    17 43 3,658 9.9 Go

    Distributed tracing without code changes. 🚀 Instantly monitor any application using OpenTelemetry and eBPF

    

19. datadog-agent

    18 9 3,646 10.0 Go

    Main repository for Datadog Agent

    

    Project mention: Scalability Test Planning Framework | dev.to | 2026-05-07

    Sources: Chapter 4 — Service Level Objectives (Google SRE Book) - Guidance on SLIs, SLOs, SLAs, percentiles, error budgets, and how to structure measurable objectives. (sre.google) AWS Well-Architected Framework — Performance Efficiency - Architectural principles and considerations for designing performance-efficient, production-like environments used to inform environment parity and scaling tests. (aws.amazon.com) Grafana k6 Documentation - Load-scripting examples, stages/thresholds, and CI integration patterns for modern load testing. (k6.io) Gatling Documentation - Test-as-code practices, scenario modeling, CI/CD integrations, and reporting approaches for high-concurrency simulations. (gatling.io) Prometheus Instrumentation Best Practices - Recommendations for metric types, naming, histograms, and sampling to make percentile calculations reliable. (prometheus.io) Honeycomb — Testing in Production - Practical perspectives on testing in production, canarying, and the observability practices that make production tests safe and informative. (honeycomb.io) Datadog Documentation — Dashboards & APM Fundamentals - Visualization patterns (heatmaps, percentiles), APM guidance, and how to present performance vs. load in dashboards and reports. (docs.datadoghq.com)

20. kiali

    19 3 3,617 9.7 Go

    Kiali project, observability for the Istio service mesh

    

21. alloy

    20 1 3,245 9.9 Go

    OpenTelemetry Collector distribution with programmable pipelines (by grafana)

    

22. subtrace

    21 2 2,809 8.7 Go

    Network inspector for your backend

    

23. sloth

    22 11 2,499 8.7 Go

    🦥 Easy and simple Prometheus SLO (service level objectives) generator (by slok)

    

24. perses

    23 11 2,213 9.8 Go

    The CNCF sandbox for observability visualisation. Already supports Prometheus, Tempo, Loki and Pyroscope - more data sources to come!

    

    Project mention: I can't recommend Grafana anymore | news.ycombinator.com | 2025-11-14

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• A note from our sponsor - SaaSHub
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