LLM observability: tools for developers

Monitoring, traces, evaluation and quality tracking for LLM applications. An entry can appear under several use cases when its topics or description provide several explicit signals.

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123 entries in this view.

Tool ranking

Ranked by normalized popularity across sources. Raw values keep their source-specific window, shown under each tool; a change requires at least two snapshots from the last 7 days.

  1. 1

    Other
    Active

    Test your prompts, agents, and RAGs. Red teaming/pentesting/vulnerability scanning for AI. Compare performance of GPT, Claude, Gemini, DeepSeek, and more. Simple declarative configs with command line and CI/CD integration. Used by OpenAI…

    TypeScriptLicense: MIT
    • ci
    • ci-cd
    • cicd
    • evaluation
    • evaluation-framework

    githubmeasured growthOpen source ↗

    24 738GitHub stars+131 (+0.53 %)
  2. 2

    Other
    Active

    SigNoz is an open-source, OpenTelemetry-native observability platform for your team and their AI agents. Get logs, metrics, and traces in one tool with features like APM, distributed tracing, log management, infra monitoring, etc. Combined…

    TypeScript
    • apm
    • application-monitoring
    • distributed-tracing
    • go
    • good-first-issue

    githubmeasured growthOpen source ↗

    31 992GitHub stars+62 (+0.19 %)
  3. 3

    Agent
    Active

    The open source AI engineering platform for agents, LLMs, and ML models. MLflow enables teams of all sizes to debug, evaluate, monitor, and optimize production-quality AI applications while controlling costs and managing access to models…

    PythonLicense: Apache-2.0
    • agentops
    • agents
    • ai
    • ai-governance
    • apache-spark

    githubmeasured growthOpen source ↗

    27 768GitHub stars+80 (+0.29 %)
  4. 4

    Library
    Active

    Prefect is a workflow orchestration framework for building resilient data pipelines in Python.

    PythonLicense: Apache-2.0
    • automation
    • data
    • data-engineering
    • data-ops
    • data-science

    githubmeasured growthOpen source ↗

    23 759GitHub stars+66 (+0.28 %)
  5. 5

    Other
    Active

    A high-performance observability data pipeline.

    RustLicense: MPL-2.0
    • agent
    • cloud-native
    • data-transformation
    • datadog
    • etl

    githubmeasured growthOpen source ↗

    22 507GitHub stars+45 (+0.20 %)
  6. 6

    Other
    Active

    Open source observability platform for logs, metrics, traces, frontend monitoring, pipelines and LLM observability. A sophisticated, simple and highly performant alternative to Datadog, Splunk, and Elasticsearch with 140x lower storage…

    TypeScriptLicense: AGPL-3.0
    • analytics
    • apm
    • datadog
    • elasticsearch
    • grafana

    githubmeasured growthOpen source ↗

    21 608GitHub stars+115 (+0.54 %)
  7. 7

    Other
    Active

    Mastra is the modern TypeScript framework for AI-powered applications and agents.

    TypeScript
    • agents
    • ai
    • chatbots
    • evals
    • javascript

    githubmeasured growthOpen source ↗

    27 624GitHub stars+121 (+0.44 %)
  8. 8

    Other
    Active

    The fastest path to AI-powered full stack observability, even for lean teams.

    GoLicense: GPL-3.0
    • ai
    • alerting
    • cncf
    • data-visualization
    • database

    githubmeasured growthOpen source ↗

    80 402GitHub stars+91 (+0.11 %)
  9. 9

    Other
    Active

    eBPF-based Networking, Security, and Observability

    GoLicense: Apache-2.0
    • bpf
    • cncf
    • cni
    • containers
    • ebpf

    githubmeasured growthOpen source ↗

    25 041GitHub stars+27 (+0.11 %)
  10. 10

    Agent
    Active

    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.

    GoLicense: Apache-2.0
    • cloud-native
    • devops
    • docker
    • ebpf
    • golang

    githubmeasured growthOpen source ↗

    12 066GitHub stars+7 (+0.06 %)
  11. 11

    Skill
    Active

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

    Go
    • agent-skills
    • ai
    • cloud-native
    • cncf
    • devops

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/kubesphere/kubesphere ~/.claude/skills/kubesphere

    17 037GitHub stars+9 (+0.05 %)
  12. 12

    Other
    Active

    the LLM vulnerability scanner

    PythonLicense: Apache-2.0
    • ai
    • llm-evaluation
    • llm-security
    • security-scanners
    • vulnerability-assessment

    githubmeasured growthOpen source ↗

    9 079GitHub stars+43 (+0.48 %)
  13. 13

    MCP
    Active

    🫖 Status page with uptime monitoring & API monitoring as code 🫖

    TypeScriptLicense: AGPL-3.0
    • alerting
    • incident-management
    • mcp
    • mcp-server
    • monitoring

    githubmeasured growthOpen source ↗

    9 052GitHub stars+28 (+0.31 %)
  14. 14

    Skill
    Active

    YAO = Yielding AI Outcomes. A rigorous engineering, evaluation, governance, and portability system for reusable agent skills.

    PythonLicense: MIT
    • agent-skills
    • ai-agents
    • evaluation
    • governance
    • meta-skill

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/yaojingang/yao-meta-skill ~/.claude/skills/yao-meta-skill

    2 577GitHub stars+54 (+2.1 %)
  15. 15

    Skill
    Active

    Build tested agent skills and govern their lifecycle through a user-defined marketplace: evidence, discovery, updates, rollback, quarantine, and 17-platform distribution.

    PythonLicense: MIT
    • agent-skills
    • ai-agents
    • claude-code
    • codex
    • cursor

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/FrancyJGLisboa/agent-skill-creator ~/.claude/skills/agent-skill-creator

    2 367GitHub stars+30 (+1.3 %)
  16. 16

    Skill
    Active

    The Fable Workflow: how Claude Fable 5 worked, distilled into skills any model can run, with the eval that keeps it honest. Think / act / prove.

    PythonLicense: MIT
    • agent-skills
    • ai-agents
    • claude
    • claude-code
    • claude-md

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/Sahir619/fable-method ~/.claude/skills/fable-method

    2 272GitHub stars+19 (+0.84 %)
  17. 17

    MCP
    Active

    A Go framework for building production agent systems with graph workflows, tools, memory, A2A, AG-UI, MCP, evaluation, and observability.

    GoLicense: Apache-2.0
    • a2a
    • a2a-protocol
    • ag-ui
    • agent
    • agent-framework

    githubmeasured growthOpen source ↗

    1 759GitHub stars+24 (+1.4 %)
  18. 18

    Other
    Active

    Open-source observability tool that uses AI agents to self-heal your software

    TypeScriptLicense: Apache-2.0
    • ai
    • llm
    • memory
    • observability
    • opentelemetry

    githubmeasured growthOpen source ↗

    1 404GitHub stars+2 (+0.14 %)
  19. 19

    Skill
    Active

    A skill creator that proves its skills work. Evidence-driven skill creation for Claude Code and Codex: baseline-tested generation, per-skill regression evals, ecosystem doctor, cross-runtime compile, and an opt-in proactive advisor.

    PythonLicense: MIT
    • agent-skills
    • claude-ai
    • claude-code
    • claude-skills
    • codex

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/tripleyak/SkillForge ~/.claude/skills/SkillForge

    884GitHub stars+3 (+0.34 %)
  20. 20

    Skill
    Active

    OpenJudge: A Unified Framework for Holistic Evaluation and Quality Rewards

    PythonLicense: Apache-2.0
    • agent
    • agent-skills
    • ai-agent
    • alignment
    • evaluation

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/agentscope-ai/OpenJudge ~/.claude/skills/OpenJudge

    809GitHub stars+10 (+1.3 %)
  21. 21

    Other
    Active

    AI SRE AgenticOps for Kubernetes and cloud infrastructure.

    Python
    • agenticops
    • ai
    • aiops
    • aisre
    • cloud

    githubmeasured growthOpen source ↗

    782GitHub stars+1 (+0.13 %)
  22. 22

    Skill
    Active

    A test runner for agentskills.io-style AI agent skills

    TypeScriptLicense: MIT
    • agent-evals
    • agent-skills
    • agentskills
    • ai-agents
    • cli

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/darkrishabh/agent-skills-eval ~/.claude/skills/agent-skills-eval

    719GitHub stars+15 (+2.1 %)
  23. 23

    Agent
    Active

    DataBuff is an AI-native APM built on Opentelemetry，with multi-agent troubleshooting out of the box.

    JavaLicense: AGPL-3.0
    • aiops
    • apm
    • application-monitoring
    • devops
    • distributed-tracing

    githubmeasured growthOpen source ↗

    634GitHub stars+26 (+4.3 %)
  24. 24

    Skill
    Active

    Open-source infrastructure that turns scattered SKILL.md files into curated, retrieval-ready agent-skill corpora—with retrieval and evaluation tooling included.

    PythonLicense: Apache-2.0
    • agent-memory
    • agent-skills
    • ai-agents
    • benchmark
    • dataset

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/EverMind-AI/SkillCorpus ~/.claude/skills/SkillCorpus

    424GitHub stars+204 (+92.7 %)
  25. 25

    Skill
    Active

    Multi-tier framework for evaluating AI agent skills with quality gates, semantic overlap detection, synthetic evaluation dataset generation, and live agent evaluation that measures how skills affect agent behavior.

    PythonLicense: Apache-2.0
    • agent-evaluation
    • agent-security
    • agent-skills
    • agentic-ai
    • benchmark

    githubmeasured growthOpen source ↗

    Install git clone https://github.com/NVIDIA/SkillEvaluator ~/.claude/skills/SkillEvaluator

    389GitHub stars+63 (+19.3 %)