The Global Classification Knowledge Graph
A unified graph connecting industry, geography, trade, occupations, health, patents, and more - spanning every major classification standard worldwide.
Global Coverage
Countries colored by taxonomy coverage depth
0countries covered ยท click any country to explore its taxonomy profile
Classification Galaxy
Each orb is a classification system - size reflects node count, edges show crosswalk connections
Click any bubble to drill into its systems
Click any system to explore its hierarchy. Drag to rearrange.
System Crosswalks
228,561 connections linking 169 classification systems
Browse by Category
16 categories spanning every classification domain
Academic programs, credentials, and educational standards
Conservation, biodiversity, climate data, and earth science classifications
Capital markets, financial instruments, ESG, and government finance
Country, subdivision, and regional classification systems
Pharmaceuticals, clinical coding, diagnostics, medical devices, biotechnology, and health informatics
National and international industry classification standards
Global conventions, treaties, and multilateral frameworks
ISO management system standards for quality, safety, and sustainability
Skills, roles, occupational frameworks, and professional standards
Harmonized trade codes and product classification hierarchies
Regulatory frameworks, compliance standards, and governance codes
Academic disciplines, library classification, and knowledge organization
Measurement scales, physical constants, and reference classification systems
Networking, hardware, software, and digital infrastructure standards
Aviation, maritime, rail, and freight classification codes
Sector vocabularies for traditional industries and emerging technologies
Browse by Industry Sector
Jump directly into a sector across all classification systems
Explore by Industry
Pick an industry to discover its classification codes across all global standards
For Developers
Three ways to integrate the classification graph
Open Source
Fork, self-host, or contribute. Full source for the API, ingesters, and frontend.
colaberry/WorldOfTaxonomyREST API
JSON over HTTP - search, browse, translate codes, and explore crosswalks. No SDK needed.
GET /api/v1/search?q=physicianMCP Server
Connect Claude Desktop or any MCP client for search, translation, and hierarchy navigation.
python3 -m world_of_taxonomy mcp