kor ☆
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Description:
CLI tool to discover unused Kubernetes resources
Type: Formula  |  Latest Version: 0.6.6@0  |  Tracked Since: Dec 25, 2025
Links: Homepage  |  GitHub  |  formulae.brew.sh
Stars: 1,565  |  Forks: 130  |  Language: Go  |  Category: Devops
Tags: kubernetes cli devops cleanup security go
Install: brew install kor
About:
Kor is a command-line interface (CLI) tool written in Go that scans Kubernetes clusters to identify unused or orphaned resources like ConfigMaps, Secrets, and Deployments. It helps reduce cluster clutter and improve security by pinpointing resources no longer referenced by active workloads. Its main value is providing clear, actionable reports to optimize and secure Kubernetes environments.
Key Features:
  • Scans for unused Kubernetes resources (ConfigMaps, Secrets, Deployments, etc.)
  • Provides clear, actionable output in various formats (JSON, YAML)
  • Helps improve cluster security and reduce resource waste
  • Open-source tool with active community development
Use Cases:
  • Kubernetes cluster cleanup and cost optimization
  • Security auditing by identifying orphaned secrets and configmaps
  • Pre-migration or environment consolidation analysis
Alternatives:
  • kube-no-trouble – Also detects deprecated APIs, but Kor focuses specifically on unused resources
  • popeye – Broader Kubernetes cluster sanitizer and linter, whereas Kor is specialized for unused resource discovery
Version History
Detected Version Rev Change Commit
Dec 25, 2025 7:59pm 0.6.6 0 VERSION_BUMP 688f3241
Oct 16, 2025 11:04pm 0 VERSION_BUMP eaf4f55a
Sep 11, 2025 6:05pm 0 VERSION_BUMP e88524b0
Jan 12, 2025 7:59pm 0 VERSION_BUMP 98496067
Dec 15, 2024 12:52pm 0 VERSION_BUMP a903449d
Dec 4, 2024 4:09am 0 VERSION_BUMP 5f758801
Dec 3, 2024 10:04pm 0 VERSION_BUMP 575d1eec
Oct 28, 2024 7:13pm 0 VERSION_BUMP 1545d2c9
Oct 28, 2024 6:48pm 0 VERSION_BUMP db53e16b
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