API Providers

Every provider tracked across the API Evangelist network, sorted A–Z.

Providers organized by the industries they operate in, from aerospace to waste management.

Providers across the top industrial countries in the world, matched by country tags.

Banks, credit unions, and building societies ranked by their Kin Score across four markets — from the CDR and Open Banking mandates to the voluntary open-finance regimes.

Card networks, acquirers, processors, PSPs, and the instant-payment rails behind each national market — the API-native layer of finance, ranked by Kin Score.

EHRs, health-data networks, payers, clinical AI, and national health infrastructure across four HL7 FHIR regimes, ranked by Kin Score.

Carriers, insurtech, embedded distribution, core policy administration, risk data, claims tech and the market bodies across four markets with no open-insurance mandate anywhere, ranked by Kin Score.

Portals, the listing-data infrastructure that federates the MLSs, brokerages, agency CRM, valuation, title and closing, property management and the land registries — the only sector with a mandated machine-readable standard, ranked by Kin Score.

Utilities and retailers, the network distributors, the system and market operators that run the grid, regulators, metering, solar and distributed energy, EV charging, storage and carbon accounting — the sector that tests whether a data mandate is replicable, ranked by Kin Score.

A single global cohort — mobile network operators, the CPaaS aggregators that resell their connectivity, the CAMARA / GSMA Open Gateway exposure layer, standards bodies and regulators, ranked by Kin Score.

Financial market data providers ranked by their Kin Score, from terminal and feed incumbents to API-first challengers.

One architecture, three unrelated markets — headless CMS, headless and composable commerce, and the headless browser infrastructure now serving AI agents, plus the monoliths that bolted an API onto an existing platform, ranked by Kin Score.

Fortune 100, Fortune 500, and Fortune 1000 companies with APIs on the network.

United States Federal Government agencies and departments publishing APIs on the network.

European national, regional, and European Union government agencies publishing APIs on the network.

Apache Software Foundation projects publishing APIs on the network.

Cloud Native Computing Foundation projects publishing APIs on the network.