Appendix - Taxonomy Table

The table shown below is the representation of level 1 and Level 2 categories for Hardware, Software, Operating Systems, IoT and OT (Operational Technology)

Category Type Level  1 Level 2
Hardware Call Management Systems or Accessories Premise Branch Exchange (PBX)
Hardware Call Management Systems or Accessories Other
Hardware Communication Devices Pay Phone
Hardware Communication Devices Fixed Phone
Hardware Communication Devices Answering Machine
Hardware Communication Devices Special Purpose Telephones
Hardware Communication Devices Digital Telephones
Hardware Communication Devices Analog Telephone
Hardware Communication Devices Two Way Radios
Hardware Communication Devices IP Phones
Hardware Communication Devices Digital Enhanced Cordless Telecommunications (DECT) Cordless Phones
Hardware Communication Devices Video Phone
Hardware Communication Devices Satellite Phone
Hardware Communication Devices Speaker Phone
Hardware Communication Devices Keyphone System
Hardware Communication Devices Conferencing Equipment
Hardware Communication Devices Other
Hardware Computer Accessories Computer Switch Boxes
Hardware Computer Accessories Docking Stations
Hardware Computer Accessories Port Replicators
Hardware Computer Accessories Peripheral Switch Boxes
Hardware Computer Accessories Signal Processor Upgrades
Hardware Computer Accessories Multimedia Kits
Hardware Computer Accessories Encoder Decoder Equipment
Hardware Computer Accessories Universal Serial Bus Hubs or Connectors
Hardware Computer Accessories Computer Country or Localization Kits
Hardware Computer Accessories Handheld PDA Starter Kits
Hardware Computer Accessories Computer Accessory Kits
Hardware Computer Accessories Computer or Notebook Stands
Hardware Computer Accessories Bluetooth Universal Serial Bus (USB) Adapter
Hardware Computer Accessories Notebook Computer Expansion Dock
Hardware Computer Accessories Personal Digital Assistant (PDA) Holder
Hardware Computer Accessories Universal Serial Bus (USB) Extension Cable
Hardware Computer Accessories Universal Serial Bus General Packet Radio Service (USB GPRS) modem
Hardware Computer Accessories Notebook Computer Carrying Case
Hardware Computer Accessories Other
Hardware Computers Server
Hardware Computers Desktop
Hardware Computers Notebook
Hardware Computers Mainframe
Hardware Computers Point of Sale (POS) Terminal
Hardware Computers Other
Hardware Computers Computer Kiosk
Hardware Computers Assembled
Hardware Computers Single Board Computer
Hardware Computers Vehicle Mounted Computer
Hardware Gaming Devices  
Hardware Gaming Devices AR/VR Headset
Hardware Gaming Devices Gaming Console
Hardware Gaming Devices Portable Gaming Console
Hardware Gaming Devices Gaming Console Accessories
Hardware Gaming Devices AR/VR Accessories
Hardware Input Devices RFID Device
Hardware Input Devices Other
Hardware Input Devices Disc Publisher
Hardware Input Devices Scanners
Hardware Mobile E-Reader
Hardware Mobile Stick PC
Hardware Mobile Smartphone
Hardware Mobile Tablet
Hardware Mobile Other
Hardware Network Security Device VPN Device
Hardware Network Security Device Firewall Device
Hardware Network Security Device Secure Application Gateway
Hardware Network Security Device Vulnerability Management
Hardware Network Security Device Other
Hardware Network Security Device Network Traffic Monitoring
Hardware Networking Device Bridges and Routers
Hardware Networking Device Concentrators, Hubs, and Multiplexers
Hardware Networking Device Switch
Hardware Networking Device Modem
Hardware Networking Device Print Server
Hardware Networking Device Terminal Server
Hardware Networking Device Wireless Fidelity Base Stations Wifi
Hardware Networking Device Server Load Balancer
Hardware Networking Device Access Servers
Hardware Networking Device Remote Management Adapters
Hardware Networking Device Network Management or Monitoring Device
Hardware Networking Device Wireless Access Point
Hardware Networking Device Other
Hardware Power Conditioning Equipment Power Distribution Unit (PDU)
Hardware Power Conditioning Equipment Uninterruptible Power Supply (UPS)
Hardware Power Conditioning Equipment Power Adapters or Inverters
Hardware Power Conditioning Equipment Other
Hardware Printers Multi-Function Printer (MFP)
Hardware Printers Laser
Hardware Printers Inkjet
Hardware Printers 3D Printers
Hardware Printers Line Matrix Printers
Hardware Printers Compact Disc (CD) or Labeling Printer
Hardware Printers Thermal Tape Printers
Hardware Printers Other
Hardware Storage Devices Network Attached Storage (NAS) Device
Hardware Storage Devices Hard Disk Arrays
Hardware Storage Devices Tape Drives
Hardware Storage Devices Other
Hardware Storage Devices Solid State Drive (SSD)
Hardware System Boards Processors Interfaces or Modules Motherboard
Hardware System Boards Processors Interfaces or Modules Transceivers and Media Converters
Hardware System Boards Processors Interfaces or Modules Other
Hardware System Cards Network Interface Card
Hardware System Cards Other
Hardware Unidentified  
Hardware Virtualized Virtual Machine
Hardware Virtualized Container
Hardware Virtualized Cloud Instance
Hardware Virtualized  
IoT Devices Audio and Visual Devices Audio Amplifier
IoT Devices Audio and Visual Devices Projector
IoT Devices Audio and Visual Devices Smart Speaker
IoT Devices Audio and Visual Devices Smart Earpiece
IoT Devices Audio and Visual Devices Smart TV
IoT Devices Audio and Visual Devices Portable Media Player
IoT Devices Audio and Visual Devices Media Streaming Device
IoT Devices Audio and Visual Devices Other
IoT Devices Home or Building Automation Devices Lighting control
IoT Devices Home or Building Automation Devices HVAC
IoT Devices Home or Building Automation Devices Safety, Security and Surveillance
IoT Devices Home or Building Automation Devices Smart Sensorse
IoT Devices Home or Building Automation Devices Smart Home Appliance
IoT Devices Home or Building Automation Devices Smart Energy Meters
IoT Devices Home or Building Automation Devices Other
IoT Devices Wearable Devices Health and Activity Monitor
IoT Devices Wearable Devices Smart Watch
IoT Devices Wearable Devices Smart Apparel
IoT Devices Wearable Devices Smart Cameras
IoT Devices Wearable Devices Smart Footwear
IoT Devices Wearable Devices Smart Glasses
IoT Devices Wearable Devices Other
Operating System Embedded  
Operating System Filesystem Software  
Operating System Firmware  
Operating System Linux Client
Operating System Linux Server
Operating System Linux  
Operating System Mac Client
Operating System Mac Server
Operating System Mac  
Operating System Mainframe  
Operating System Mobile  
Operating System Network Operating System  
Operating System Other  
Operating System Unidentified  
Operating System Unix Client
Operating System Unix Server
Operating System Unix  
Operating System Virtualization Hypervisor Type-1 (Bare Metal)
Operating System Windows Client
Operating System Windows Server
Operating System Windows Embedded
Operating System Windows  
OT Building Automation Devices BACnet Controller
OT Building Automation Devices BACnet Router
OT Building Automation Devices Lighting and Control
OT Building Automation Devices HVAC Control
OT Building Automation Devices Power and Energy Monitoring
OT Building Automation Devices Smart Appliance 
OT Building Automation Devices Security Camera
OT Building Automation Devices Intrusion Detection and Access Control
OT Building Automation Devices Fire Safety
OT Building Automation Devices Leak Detection
OT Building Automation Devices Other
OT Building Automation Devices Building Automation Controller
OT Building Automation Devices Building Automation Router
OT Data Acquisition, Test and Measurement System Oscilloscope
OT Data Acquisition, Test and Measurement System Other
OT Field Instruments Measurement Systems
OT Field Instruments Motion Control
OT Field Instruments Robots
OT Field Instruments Sensor
OT Field Instruments Smart Meter
OT Field Instruments Other
OT Field Instruments Field Device Management
OT Industrial Control System (ICS) Distributed Control System (DCS)
OT Industrial Control System (ICS) Human Machine Interface (HMI)
OT Industrial Control System (ICS) I/O Module
OT Industrial Control System (ICS) Industrial PC
OT Industrial Control System (ICS) Intelligent Electronic Device (IED)
OT Industrial Control System (ICS) Programmable Logic Controller (PLC)
OT Industrial Control System (ICS) Remote Terminal Unit (RTU)
OT Industrial Control System (ICS) Safety Instrumented System (SIS)
OT Industrial Control System (ICS) SCADA
OT Industrial Control System (ICS) Other
OT Industrial Networking Industrial Network Security
OT Industrial Networking Industrial Ethernet Switch
OT Industrial Networking Industrial Media Converter
OT Industrial Networking Industrial Serial Device Server
OT Industrial Networking Industrial Wireless LAN
OT Industrial Networking IoT Gateway
OT Industrial Networking Other
OT Industrial Networking Communication Processor
OT Process Analyzers Gas Analyzer
OT Process Analyzers Liquid Analyzer
OT Process Analyzers Other
Software Application Development Programming Languages
Software Application Development Framework
Software Application Development Application Development Lifecycle Management (ADLM)
Software Application Development Testing
Software Application Development Runtime
Software Application Development Mobile App Development
Software Application Development Web Platform Development
Software Application Development Compiler and Decompiler
Software Application Development Application Programming Interface (API)
Software Application Development Development Tool
Software Application Development Other
Software Auxiliary Software Compression
Software Auxiliary Software Data Conversion
Software Auxiliary Software File Management
Software Auxiliary Software Desktop or Mobile Utility
Software Auxiliary Software Diagnostic and Optimization
Software Auxiliary Software Personal Finance
Software Auxiliary Software Other
Software Business Intelligence and Analytics Reporting
Software Business Intelligence and Analytics Corporate Performance Management (CPM)
Software Business Intelligence and Analytics BI Platforms
Software Business Intelligence and Analytics Portal Server Software
Software Business Intelligence and Analytics Other
Software Collaboration Web Conferencing
Software Collaboration Social Network and Instant Messaging
Software Collaboration Desktop Communications
Software Collaboration Team Collaboration
Software Collaboration Other
Software Content Management Enterprise Content Management (ECM)
Software Content Management Web Content Management (WCM)
Software Content Management Other
Software Customer Relationship Management (CRM) Customer Service and Support
Software Customer Relationship Management (CRM) Digital Commerce
Software Customer Relationship Management (CRM) Sales and Marketing Automation
Software Customer Relationship Management (CRM) Other
Software Data Management and Quality Data Quality
Software Data Management and Quality Data Integration
Software Data Management and Quality Master Data Management
Software Data Management and Quality Information Retrieval or Search
Software Data Management and Quality Clustering
Software Data Management and Quality Other
Software Data Management and Quality Data Collection
Software Databases NOSQL
Software Databases RDBMS
Software Databases Personal
Software Databases Client Tools
Software Databases Other
Software Digital Content Publishing
Software Digital Content Viewer
Software Digital Content Digital Video and Multimedia
Software Digital Content Music or Sound Editing
Software Digital Content Computer Game or Entertainment
Software Digital Content Graphic and Image
Software Digital Content Optical Character Reader or Scanning Software
Software Digital Content Other
Software Digital Content News and Magazine
Software Digital Content Weather
Software Dynamic Port Dynamic Port
Software Educational or Reference Multimedia Educational Software
Software Educational or Reference Route Navigation
Software Educational or Reference Other
Software Enterprise Resource Planning (ERP) Enterprise Asset Management (EAM)
Software Enterprise Resource Planning (ERP) Financial Management Systems (FMS)
Software Enterprise Resource Planning (ERP) Human Capital Management (HCM)
Software Enterprise Resource Planning (ERP) Manufacturing and Operations
Software Enterprise Resource Planning (ERP) Other
Software Industrial Automation and Control Design and Configuration
Software Industrial Automation and Control Manufacturing Operations Management
Software Industry Specific Software Analytical or Scientific
Software Industry Specific Software Engineering Design and Modelling
Software Industry Specific Software Financial Services
Software Industry Specific Software Other
Software Industry Specific Software Healthcare and Fitness
Software Industry Specific Software Job Search and Recruitment
Software Industry Specific Software Auto and Vehicle
Software Industry Specific Software Event Booking
Software Industry Specific Software Real Estate and Home Improvement
Software Industry Specific Software Lifestyle and Recreation
Software Industry Specific Software Food and Drink
Software Industry Specific Software Travel and Transport
Software IT Operations Application Performance Monitoring (APM)
Software IT Operations Process Automation
Software IT Operations IT Service Management (ITSM)
Software IT Operations IT Operation Management (ITOM)
Software IT Operations Enterprise Mobility Management (EMM)
Software IT Operations IT Asset and Inventory Management (ITAM)
Software IT Operations Agent
Software IT Operations Other
Software Malware Trojan
Software Malware Adware
Software Malware Bot
Software Malware Bug
Software Malware Ransomware
Software Malware Rootkit
Software Malware Spyware
Software Malware Virus
Software Malware Worm
Software Malware Other
Software MiddleWare Application Integration
Software MiddleWare Business Process Management
Software MiddleWare Portal and Digital Engagement Technologies
Software MiddleWare Other
Software Network Application Web Servers
Software Network Application Application Servers
Software Network Application Internet Browser
Software Network Application Internet Directory Services
Software Network Application File Transfer and Sharing
Software Network Application Other
Software Networking Terminal Emulation
Software Networking Access Software
Software Networking Platform Interconnectivity
Software Networking Network Performance Monitoring and Diagnostics (NPMD)
Software Networking Other
Software Productivity Word Processor
Software Productivity Spreadsheet
Software Productivity Presentation
Software Productivity Email and Calendar
Software Productivity Note Taking
Software Productivity Office Suite
Software Productivity Other
Software Project and Portfolio Management (PPM) Project and Portfolio Management (PPM)
Software Project and Portfolio Management (PPM) Other
Software Protocol File Transfer and Sharing
Software Protocol Terminal Emulation
Software Protocol Electronic Mail
Software Protocol Network Management
Software Protocol Bluetooth
Software Protocol Automation
Software Protocol Web Services
Software Protocol Messaging
Software Protocol Network Security
Software Protocol VoIP (voice over IP)
Software Protocol Wide Area Network
Software Protocol Local Area Network (LAN)
Software Protocol Metropolitan Area Network (MAN)
Software Protocol Storage Area Network (SAN)
Software Protocol ISO 
Software Protocol Cisco 
Software Protocol Novell NetWare and Protocols
Software Protocol IBM Systems Network Architecture (SNA) and Protocols
Software Protocol AppleTalk
Software Protocol DECnet
Software Protocol SSC/C7
Software Protocol Others
Software Reserved Reserved
Software Security Endpoint Management and Security
Software Security Data Loss Prevention
Software Security Endpoint Protection
Software Security Identity Governance and Administration
Software Security Secure E-mail Gateway
Software Security Secure Web Gateway
Software Security Security Information and Event Management (SIEM)
Software Security Security Testing
Software Security Vulnerability and Security Configuration Assessment
Software Security Web Access Management (WAM)
Software Security Agent
Software Security Authentication
Software Security Other
Software Storage Backup and Recovery
Software Storage Integrated Systems
Software Storage Storage Network
Software Storage Other
Software Supply Chain Management (SCM) Procurement
Software Supply Chain Management (SCM) Supply Chain Execution and Planning
Software Supply Chain Management (SCM) Other
Software Unassigned Unassigned
Software Unknown Unknown
Software Virtualization Desktop Virtualization
Software Virtualization Containerization
Software Virtualization Hypervisor Type-2 (Hosted)
Software Virtualization Network Virtualization
Software Virtualization Storage Virtualization
Software Virtualization Administration
Software Virtualization Other