A curated collection of reference notes, cheatsheets, and resources across engineering, security, data, and systems.
- Security & Information Assurance
- Artificial Intelligence & Machine Learning
- Cloud Infrastructure & Platforms
- Containers & Orchestration
- Data Engineering, Streaming & Databases
- Observability, Metrics & Telemetry
- Operating Systems & Hardware
- Programming Languages & Software Engineering
- Networking & Infrastructure Services
- DevOps, CI/CD & Automation
- Developer Tools & Editors
- Career, Leadership & Product Strategy
- Civic Tech, Media & Society
- appsec - Application security practices, testing, and tooling.
- auth - Authentication mechanisms, patterns, and identity security.
- ciso - CISO leadership, metrics, and security program strategy.
- cloudsec - Cloud security resources, benchmarks, and threat models.
- crypto - Applied cryptography, encryption techniques, and protocols.
- cti - Cyber threat intelligence sources and frameworks.
- detect-eng - Detection engineering principles, rules, and workflows.
- devsecops - Integrating security into CI/CD pipelines and DevOps.
- dfir - Digital forensics and incident response resources.
- edr - Endpoint detection and response tools and telemetry.
- foodcyber - Cybersecurity topics for agriculture and food systems.
- fraud - Online fraud detection and abuse prevention resources.
- iacsec - Infrastructure as Code security scanners and policy enforcement.
- iam - Identity and access management concepts and implementations.
- incidents - Public incident reviews and post-mortem analysis.
- iotsec - Internet of Things and embedded hardware security.
- ldap - LDAP directory services, schema, and queries.
- linux-fw - Linux firewalls, iptables, and packet filtering.
- logsiem - Log management and SIEM engineering practices.
- medsec - Medical device and healthcare cybersecurity resources.
- netscan - Network scanning, discovery, and inventory tools.
- oscal - Open Security Controls Assessment Language tooling.
- osint - Open source intelligence sources and techniques.
- osquery - Osquery configurations, packs, and endpoint visibility.
- pan - Palo Alto Networks firewalls and reference architectures.
- saml - SAML authentication protocols and single sign-on.
- secdata - Security data pipelines and analytical security engineering.
- sec-frameworks - Security standards, compliance, and governance frameworks.
- secorg - Information security organizational structures and models.
- siem - Security information and event management platforms.
- sigsci - Signal Sciences next-gen WAF tools and notes.
- soc - Security operations center processes and architectures.
- startupsec - Security programs and priorities for early-stage startups.
- suricata - Network IDS/IPS monitoring, rules, and scripts.
- vault - HashiCorp Vault secrets management and configuration.
- velociraptor - Endpoint visibility and digital forensics tool.
- zeek - Zeek network security monitoring and protocol analysis.
- ai - Agentic systems, LLM tools, security, and architectures.
- datasci - Data science workflows, statistics, and modeling.
- jupyter - Jupyter notebooks, kernels, and interactive environments.
- mlops - Machine learning engineering, pipelines, and operations.
- notebook - Interactive computing environments and notebook tooling.
- nvidia - NVIDIA GPU acceleration, CUDA, and driver setups.
- aws - Amazon Web Services infrastructure, services, and architectures.
- azure - Microsoft Azure cloud resources and configurations.
- gcp - Google Cloud Platform infrastructure and analytics tools.
- serverless - Serverless computing, functions, and architecture patterns.
- containers - Container runtimes, images, and container isolation.
- k3s - Lightweight Kubernetes distribution setup and patterns.
- k8s - Kubernetes cluster management, architecture, and deployment.
- cassandra - Apache Cassandra distributed NoSQL database.
- clickhouse - ClickHouse columnar database for analytical queries.
- dagster - Dagster data orchestrator and asset-based pipelines.
- dataeng - Data engineering practices, architectures, and tools.
- data-formats - Serialized data formats, schemas, and specs.
- duckdb - Embedded analytical SQL database management system.
- graphdb - Graph databases and connected data structures.
- iceberg - Apache Iceberg open table format for analytic tables.
- influxdb - InfluxDB time-series database operations and queries.
- kafka - Kafka platform architectures and configurations.
- kafka.md - Apache Kafka event streaming cheatsheet and commands.
- pandas - Python pandas library for data analysis and manipulation.
- polars - Lightning-fast DataFrame library for Python and Rust.
- snowflake - Snowflake cloud data warehouse and analytical queries.
- spark - Apache Spark distributed data processing framework.
- sql - Relational SQL tips, techniques, and dialect references.
- victoria - VictoriaMetrics fast, cost-effective time-series database.
- elastic - Elasticsearch, Logstash, and Kibana stack guides.
- humio - Humio (LogScale) log management engine.
- jaeger - Distributed tracing system for microservices architectures.
- observability - Observability standards, OpenTelemetry, and logging patterns.
- splunk - Splunk search processing language and administration.
- telegraf - Telegraf plugin-driven server agent for collecting metrics.
- uptime - Service uptime monitoring and synthetic health checks.
- chromebook - ChromeOS and Crostini Linux container configuration.
- freebsd - FreeBSD operating system tips and administrative guides.
- hpc - High-performance computing clusters and architectures.
- linux - Linux administration, distributions, kernels, and configurations.
- mac - macOS development environment configurations and utilities.
- multipass - Canonical Multipass orchestrator for Ubuntu virtual machines.
- openbsd - OpenBSD configuration, networking, and system security.
- slurm - Slurm workload manager for high-performance computing clusters.
- asm - Assembly language notes, architectures, and instructions.
- bash - Bash scripting syntax, idioms, and shell tricks.
- golang - Go language patterns, TUI, concurrency, and tooling.
- miscdev - Miscellaneous software development tips and snippets.
- python - Python programming guides, libraries, and best practices.
- rust - Rust systems programming resources and libraries.
- softeng - Software engineering principles and architecture patterns.
- bgp - Border Gateway Protocol routing and internet topology.
- keycloak - Keycloak identity and access management system.
- nats - NATS high-performance messaging system and architectures.
- nginx - NGINX web server and reverse proxy configurations.
- squid - Squid caching and forwarding HTTP web proxy.
- tailscale - WireGuard-based Tailscale mesh VPN configurations.
- tls - Transport Layer Security certificates, ciphers, and protocols.
- unifi - Ubiquiti UniFi network hardware and controller configurations.
- airflow - Apache Airflow workflow automation and scheduling.
- ansible - Ansible automation playbooks and configuration management.
- benthos - Benthos (Redpanda Connect) stream processing service.
- bots - ChatOps bot frameworks including errbot and opsdroid.
- devops-platform - Internal developer platforms and DevOps portals.
- distributed-systems - Distributed systems theory, consensus, and architecture.
- git - Git version control cheatsheet and command workflows.
- gitlab - GitLab CI/CD pipelines, runners, and administration.
- sreops - Site Reliability Engineering practices and operations.
- tf - Terraform infrastructure as code configurations and modules.
- windmill - Windmill developer platform for workflows and scripts.
- workflow - General workflow automation systems and engines.
- awesomewm - Awesome window manager configuration and Lua scripting.
- helix-editor - Helix modal editor configuration and keybindings.
- jq - Command-line JSON processor syntax and recipes.
- markdown - Markdown formatting standards and writing guidelines.
- neovim - Neovim text editor configs, plugins, and workflows.
- templating - Template engines and text templating formats.
- tui - Terminal user interface frameworks and toolkits.
- xml - XML processing, schemas, and transformation tools.
- yq - Command-line YAML, JSON, and XML processor recipes.
- blogs - Curated technical and engineering blogs.
- booklist - Reading list across technology, systems, and leadership.
- burnout - Burnout recovery strategies and mental health resources.
- career - Career development, interviews, and professional progression.
- devrel - Developer relations, advocacy, and community building.
- eng-career - Engineering career ladders and skill development.
- leadership - Engineering leadership, management practices, and culture.
- meetups - Tech meetups, conferences, and community gatherings.
- news - Technical news feeds and industry aggregators.
- podcasts - Recommended tech, security, and culture podcasts.
- product - Product management principles, strategy, and roadmapping.
- product-systems - Product operating models and organizational systems.
- tt - Team Topologies organization and interaction modes.
- wardley - Wardley mapping strategy and situational awareness.
- churchtech - Technology systems, streaming, and software for churches.
- civtech - Civic technology and public-interest software projects.
- democracy - Digital democracy, voting security, and civic participation.
- disinfo - Disinformation analysis, OSINT, and media literacy.
- eu-tech - European technology ecosystem, regulation, and initiatives.
- gamedev - Game development engines, patterns, and creative resources.
- ghost - Ghost publishing platform and headless CMS configuration.
- mastodon - Mastodon and ActivityPub decentralized social networking.
- misctech - Miscellaneous technology notes and curiosities.
- self-hosting - Self-hosted services, home servers, and privacy setups.
- slack - Slack integrations, apps, and administrative workflows.