DevOps & Platform Engineering Tools Directory

Kubernetes

7 tools

⚓

Open SourceHot

k9s

v0.33

Terminal UI for Kubernetes clusters. Navigate, observe, and manage your workloads in real time without memorising kubectl commands.

KubernetesCLITUI

🔭

Open Source

Lens

v2026

The Kubernetes IDE. GUI for managing multiple clusters, browsing resources, viewing logs, and exec into pods visually.

KubernetesGUIMulti-cluster

📦

Open Source

Helm

v3.17

The package manager for Kubernetes. Define, install, and upgrade complex Kubernetes applications using reusable charts.

KubernetesPackagingCNCF

🔀

Open Source

Kustomize

v5.4

Kubernetes-native configuration management. Customise raw YAML manifests for multiple environments without templating.

KubernetesConfigGitOps

⚡

Open SourceNew

Karpenter

v1.2

Node lifecycle controller for Kubernetes. Provisions optimal EC2 instances in under 60 seconds with aggressive cost consolidation.

KubernetesAWSFinOpsCNCF

🧩

Open Source

Crossplane

v1.18

Build cloud infrastructure control planes using Kubernetes. Manage AWS, GCP, and Azure resources as Kubernetes CRDs.

KubernetesIaCCNCF

🎛️

Open Source

Cluster API

v1.9

Declarative cluster lifecycle management. Provision and manage Kubernetes clusters using the Kubernetes API itself.

KubernetesCluster MgmtCNCF

GitOps

4 tools

🐙

Open SourceHot

ArgoCD

v2.13

Declarative GitOps CD for Kubernetes. Visual UI, drift detection, multi-cluster support, and SSO built-in. CNCF graduated.

GitOpsCDCNCF

🌊

Open Source

Flux

v2.4

GitOps toolkit for Kubernetes. Kubernetes-native controllers, OCI support, image automation, and lightweight footprint. CNCF graduated.

GitOpsCDCNCF

🔒

Open Source

Sealed Secrets

v0.27

Encrypt Kubernetes secrets so they can be safely stored in Git. Cluster-side controller decrypts at apply time.

GitOpsSecretsSecurity

🗝️

Open Source

External Secrets Operator

v0.10

Sync secrets from AWS Secrets Manager, GCP Secret Manager, Vault, and more into Kubernetes secrets automatically.

GitOpsSecretsAWS

Observability

6 tools

📊

Open Source

Prometheus

v3.1

The standard metrics collection and alerting system for cloud-native environments. Pull-based, time-series, and PromQL-powered.

MetricsAlertingCNCF

📈

Free tier

Grafana

v11

The open platform for beautiful analytics and monitoring. Connects to Prometheus, Loki, Tempo, and 100+ data sources.

DashboardsVisualisationCNCF

📝

Open Source

Loki

v3.3

Log aggregation system inspired by Prometheus. Indexes only labels, not log content — dramatically lower cost than Elasticsearch.

LogsGrafana StackCNCF

🔍

Paid

Datadog

Agent v7

Full-stack observability platform. APM, logs, metrics, security, and synthetics in one place. Best-in-class for large engineering orgs.

APMLogsMetrics

🕸️

Open Source

Hubble

v1.16

Network observability for Kubernetes powered by Cilium and eBPF. Deep visibility into service-to-service communication flows.

NetworkingeBPFCilium

🔭

Open SourceNew

OpenTelemetry

v1.0

Vendor-neutral observability framework for traces, metrics, and logs. The emerging standard for instrumentation across cloud-native apps.

TracesMetricsCNCF

Security

6 tools

🛡️

Open SourceHot

Trivy

v0.55

All-in-one security scanner for containers, filesystems, Git repos, and Kubernetes. Fast, accurate, and CI/CD-friendly.

CVE ScanningIaCSBOM

🔎

Open Source

Grype

v0.82

Container and filesystem vulnerability scanner by Anchore. Low false-positive rates and excellent SARIF output for CI pipelines.

CVE ScanningCI/CDSARIF

🦅

Open Source

Falco

v0.39

Runtime security for Kubernetes. Detects anomalous behaviour using syscall-level eBPF monitoring. CNCF graduated.

Runtime SecurityeBPFCNCF

📋

Open Source

OPA Gatekeeper

v3.18

Policy-as-code for Kubernetes using Open Policy Agent. Enforce custom admission policies — prevent privileged pods, require labels, and more.

PolicyAdmissionCNCF

🌿

Open Source

Kyverno

v1.13

Kubernetes-native policy engine. Write policies as YAML — no Rego required. Validate, mutate, generate, and verify image signatures.

PolicyAdmissionCNCF

🕵️

Free tier

Snyk

2026

Developer-first security platform. Scans code, containers, IaC, and open source dependencies with IDE and CI/CD integrations.

CVE ScanningSCAIaC

Networking & Service Mesh

4 tools

🔵

Open SourceHot

Cilium

v1.16

eBPF-powered networking, security, and observability for Kubernetes. Sidecarless service mesh, network policy, and mTLS without Envoy.

eBPFService MeshCNCF

⛵

Open Source

Istio

v1.24

The most mature service mesh. Traffic management, mTLS, observability, and advanced routing with Envoy sidecar proxies. CNCF graduated.

Service MeshmTLSCNCF

🦔

Free tier

Tailscale

2026

Zero-config VPN built on WireGuard. Secure mesh networking for teams and Kubernetes clusters without firewall rules or public IPs.

VPNZero-trustWireGuard

🔗

Open Source

Linkerd

v2.15

Ultra-light service mesh for Kubernetes. Rust-based micro-proxies, automatic mTLS, and minimal resource overhead. CNCF graduated.

Service MeshmTLSCNCF

Infrastructure as Code

4 tools

🏗️

Open Source

OpenTofu

v1.9

The open-source Terraform fork under Linux Foundation. Drop-in replacement for Terraform with a truly open licence and active community.

IaCTerraformLF

🌍

Free tier

Terraform

v1.10

The most widely-used IaC tool. Provision and manage cloud infrastructure across AWS, GCP, Azure, and 1,000+ providers declaratively.

IaCMulti-cloudHCL

🌿

Open Source

Terragrunt

v0.68

Thin Terraform wrapper for DRY infrastructure code. Manage multiple environments and modules without repeating provider and backend config.

IaCTerraformDRY

☁️

Open Source

Pulumi

v3

IaC using real programming languages — TypeScript, Python, Go, C#. Full power of loops, functions, and libraries for infrastructure.

IaCTypeScriptPython

AI & LLM Tools

4 tools

🤖

Free tierHot

Claude

claude-sonnet-4-6

Anthropic's AI assistant with 200k context window. Excellent for code review, architecture analysis, runbook generation, and incident summarisation.

LLMCodeAnthropic

💻

Free tierNew

Claude Code

2026

AI-powered coding agent in your terminal. Reads your codebase, writes and runs code, fixes bugs, and manages files autonomously.

AI CodingCLIAnthropic

⚡

Open Source

Ollama

v0.6

Run LLMs locally on your machine. Pull and run Llama 3, Mistral, Phi-3, and dozens more models with a single command. Zero cloud cost.

Local LLMCLIPrivacy

🧠

Open Source

LangChain

v0.3

Framework for building LLM-powered applications and agents. Chains, tools, memory, and retrieval — the standard for agentic AI development.

LLMAgentsPython

Terminal & Developer Experience

4 tools

⚡

Free tierHot

Warp

2026

The AI-native terminal. Command blocks, inline AI assistance, shared runbooks, and a modern UI that makes the terminal actually enjoyable.

TerminalAImacOS

🐟

Open Source

Fish Shell

v3.7

Friendly interactive shell. Autosuggestions, syntax highlighting, and tab completion that works out of the box without configuration.

ShellCLIProductivity

🔧

Open Source

fzf

v0.57

Command-line fuzzy finder. Blazing fast interactive filtering for files, command history, git branches, kubectl resources, and anything else.

CLIProductivitySearch

📡

Open Source

tmux

v3.5

Terminal multiplexer. Split panes, persistent sessions, and window management. Essential for long-running processes and remote server work.

TerminalMultiplexerSSH