Developer Cheatsheets & Open-Source Tools
Explore battle-tested Docker configurations, quick CLI commands, and an exhaustive categorized directory of 100% free & open-source DevOps utilities.
🐳 Docker Recipes & Cheatsheets
View all commands →Git Quick Reference
Complete CLI reference for branching, rebase, remotes, stash, and disaster recovery.
Docker Reference
Complete quick reference table for build, run, exec, volumes, and prune commands.
DevOps Snippets
Field-tested operations: AWS, PostgreSQL, OpenSSL cert validations, Nginx CORS, and system tuning.
Dockerfile: Node.js
Alpine-based multi-stage container build with production package caching.
Dockerfile: Python
Clean slim builder pattern with compiled dependencies isolated from runtime.
Dockerfile: .NET
SDK compilation stage publishing lightweight ASP.NET binaries for production.
🛠️ Open Source Tool Directory (By Category)
Zero sponsored clutter • 100% Free / FOSSCI / CD Automation
Continuous integration and deployment servers: Jenkins, GitLab CE, Tekton, Argo CD, Drone, and Woodpecker.
Monitoring & Metrics
Time-series metric scrapers, dash platforms, and telemetry: Prometheus, Grafana, Zabbix, Netdata, and VictoriaMetrics.
Logging & Telemetry
Log ingestion, structured indexing, and query systems: Grafana Loki, Fluent Bit, Graylog, Vector, and OpenSearch.
Security & Scanners
Dynamic app scanning, image CVE auditors, and vulnerability checkers: OWASP ZAP, Trivy, Nikto, and OpenVAS.
Container Registries
Self-hosted OCI and container image repositories: CNCF Harbor, Quay CE, Distribution (Docker Registry v2), and Nexus OSS.
Orchestration & Mesh
Cluster schedulers, lightweight container coordinators, and service meshes: Kubernetes, K3s, Nomad, and Docker Swarm.