Feature

API Discovery & Catalog

A machine-readable index of available APIs.

38 providers 273 APIs 21 declared variants

APIs are indexed in a catalog, registry, or APIs.json-style manifest that humans and agents can search. Prevents the same capability from being rebuilt three times in one organization.

38 API providers on the APIs.io network offer api discovery & catalog. The highest-rated are Postman, ServiceNow, Block, APIs.io, Adobe Captivate.

Providers

Ranked by API Evangelist rating — Exemplar and Strong are expanded by default.

Exemplar 2 Complete, well-documented, and agent-ready
Postman Postman is the world's leading API platform, used by 35+ million developers to design, build, test, documen... 17 APIs 75.3 ServiceNow ServiceNow provides cloud-based platform services that automate enterprise IT operations. 57 APIs 73.4
Strong 8 Solid coverage with minor gaps
Block Block, Inc. is a global technology company building economic empowerment tools through a family of products... 1 API 65.6 APIs.io APIs.io is an open source API search engine and directory that uses APIs.json files to discover, index, and... 1 API 65.4 Adobe Captivate Adobe Captivate is an eLearning authoring tool used to create responsive eLearning content, software demons... 5 APIs 64.9 WSO2 WSO2 API Manager is an open-source API management platform supporting REST, SOAP, and GraphQL with flexible... 8 APIs 64.5 Axway Axway provides API management, integration, and security solutions enabling organizations to connect, secur... 14 APIs 63.5 Amazon EventBridge Amazon EventBridge is a serverless event bus service that makes it easy to connect your applications with d... 1 API 63.1 Choreo WSO2 Choreo is an enterprise-grade Internal Developer Platform (IDP) and application orchestration platform... 3 APIs 62.7 Amazon Glue Amazon Glue is a serverless data integration service that makes it simple to discover, prepare, move, and i... 1 API 60.7
Developing 15 Usable, with meaningful gaps to close
Encore Encore is a backend application framework and developer cloud that lets engineering teams build type-safe d... 5 APIs 59.2 Amazon MSK Amazon Managed Streaming for Apache Kafka (Amazon MSK) is a fully managed service that enables you to build... 1 API 58.6 APIToolkit (Monoscope) APIToolkit (now Monoscope) is an open-source-friendly API observability and monitoring platform that helps ... 5 APIs 58.4 WunderGraph Full Lifecycle API Management for (Federated) GraphQL. Schema Registry, composition checks, analytics, metr... 1 API 57.4 Veritas NetBackup Enterprise-grade data protection and backup solution with comprehensive REST APIs for backup, recovery, and... 16 APIs 57.0 42Crunch 42Crunch is a leading API security company that specializes in protecting and securing APIs. They provide i... 4 APIs 56.9 Apache Knox Apache Knox is a REST API and application gateway for the Apache Hadoop ecosystem. It provides a single acc... 2 APIs 56.4 Trino Trino is an open-source, distributed SQL query engine built for lightning-fast analytics over large, hetero... 1 API 54.6 Akamai API Security Akamai API Security (formerly Noname Security) provides comprehensive API discovery, posture management, an... 2 APIs 53.6 Apache APISIX Apache APISIX is a dynamic, real-time, high-performance cloud-native API gateway built on NGINX and etcd, d... 3 APIs 53.5 Wayfair Wayfair Inc. is one of the world's largest online destinations for home goods and furniture, serving over 2... 1 API 53.1 Apache Dubbo Apache Dubbo is a high-performance, Java-based open-source RPC framework that provides service discovery, t... 3 APIs 50.9 Ariba SAP Ariba provides cloud-based procurement and supply chain collaboration solutions. These APIs enable inte... 80 APIs 47.0 Apache Curator Apache Curator is a Java/JVM client library for Apache ZooKeeper, governed by the Apache Software Foundatio... 1 API 46.7 Apache Pulsar Apache Pulsar is a cloud-native, distributed messaging and streaming platform that provides server-to-serve... 2 APIs 45.5
Thin 7 Limited public surface area
APILayer APILayer is an API marketplace and hub that enables developers to discover, integrate, and build with high-... 1 API 44.3 Application Research Application Research is a topic collection focused on specifications for declaring application service inte... 5 APIs 44.0 Apollo Federation Apollo Federation is an architecture and platform for building a unified supergraph that composes multiple ... 1 API 43.8 Apollo GraphQL Whether your team is new to GraphQL, or seasoned experts, learn why Apollo is the fastest and safest way to... 11 APIs 43.1 Apinity.io Apinity empowers organisations to run their compliant API marketplace that simplifies integration, drives a... 1 API 37.4 APIClarity APIClarity is an open source API security and observability tool that analyzes API traffic to reconstruct O... 1 API 34.1 API Pulse API Pulse is a comprehensive survey and benchmarking platform created by API Evangelist that helps organiza... 1 API 32.4
Emerging 5 Early or largely undocumented
ApiShare ApiShare is an API governance platform that provides a unified operational model for API lifecycle manageme... 1 API 26.3 APIwiz APIwiz is a federated API management platform that streamlines the complete API lifecycle from design throu... 1 API 26.3 API Layer APILayer is a curated API marketplace offering 178+ production-ready APIs across categories including finan... 1 API 25.0 API Dynamics APIDynamics is an AI-driven API security and observability platform that empowers enterprises to gain real-... 1 API 23.9 API Harmony API Harmony was an API discovery and recommendation tool from IBM Research that used graph-based search, ma... 1 API 21.7
Minimal 1 Almost no public developer surface
Zurich Insurance A Swiss multinational insurance company and one of the world's largest insurers providing property, casualt... 12 APIs 12.2

What Providers Actually Declared

This feature is a canonical term. These are the free-text strings providers wrote in their own apis.yml that map onto it.

API CatalogAPI Catalog and DocsAPI DiscoveryAPI InventoryAPI Inventory AssessmentAPI MarketplaceAPIs.json IndexingAutomatic API DiscoveryBuilt-in API MarketplaceCatalog ManagementCatalog managementCatalog management and punchoutCompliant API MarketplaceProduct Catalog ManagementSchema RegistryService CatalogService Catalog And Self-ServiceService DiscoveryType-safe service-to-service calls with automatic service discovery and network plumbingUnified API CatalogZurich Exchange API Marketplace

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