AI AND MACHINE LEARNING: TensorFlow, PyTorch, JAX, Scikit-learn, Hugging Face Transformers, Keras. SOFTWARE ENGINEERING: Git, Docker, Kubernetes, Jenkins, Terraform, Ansible. CLOUD COMPUTING: AWS, Azure, Google Cloud, Cloudflare Workers, OpenShift, Lambda. DATA SCIENCE AND ANALYTICS: Pandas, NumPy, Apache Spark, Dask, Matplotlib, MLflow. NATURAL LANGUAGE PROCESSING: SpaCy, NLTK, OpenNLP, BERT, GPT, T5. COMPUTER VISION: OpenCV, Detectron2, YOLOv5, MediaPipe, MMDetection, FastAI Vision. SECURITY AND PRIVACY: OpenSSL, HashiCorp Vault, WireGuard, TLS 1.3, OAuth 2.0, Zero Trust. WEB AND MOBILE DEVELOPMENT: React, Vue, Svelte, Flutter, React Native, Next.js. AUTONOMOUS SYSTEMS: ROS, PX4 Autopilot, AirSim, Carla Simulator, Autoware, LGSVL. EMBEDDED AND EDGE COMPUTING: Zephyr RTOS, FreeRTOS, TinyML, TensorFlow Lite, Edge Impulse, Arduino IDE. HUMAN-COMPUTER INTERACTION: Three.js, WebXR, Unity, Unreal Engine, Leap Motion SDK, Speech SDK. OPERATING SYSTEMS: Linux, FreeBSD, Windows Kernel, XNU, RTEMS, QNX. DATABASES AND STORAGE: PostgreSQL, MongoDB, Redis, Cassandra, SQLite, Snowflake. SOFTWARE TESTING: PyTest, JUnit, Selenium, Cypress, TestNG, Cucumber. DEVOPS AND AUTOMATION: CircleCI, GitHub Actions, Helm, Prometheus, Grafana, ArgoCD. QUANTUM SOFTWARE: Qiskit, Cirq, PennyLane, QuTiP, Braket SDK, Ocean SDK. SIMULATION AND MODELING: SimPy, NetLogo, AnyLogic, OpenModelica, Gazebo, Simulink. BANKING AND FINANCE: COBOL, Java, Python, Scala, SQL, C++. INSURANCE TECH: R, Python, SAS, SQL, Java, .NET, Power BI. E-COMMERCE AND RETAIL: JavaScript, PHP, Python, Ruby, Magento, Shopify API. GAMING AND XR: C++, Unity, Unreal Engine, Godot, DirectX, Vulkan. TELECOMMUNICATIONS: Erlang, Java, C, Go, Kubernetes, Kafka. HEALTHCARE TECH: HL7, FHIR, Python, R, SQL, C#, Java. ENERGY AND UTILITIES: Python, MATLAB, SCADA systems, C++, Java, Simulink. LEGAL TECH: Python, Ruby, JavaScript, NLP APIs, SQL.