API Marketplaces & Hubs – Public APIs Directory

About API Marketplaces & Hubs

Centralized hubs to discover, subscribe to, and manage public APIs. Many provide analytics, keys, and usage dashboards including rate-limit insights.

Row Types:

Special Indicators:

Prefer hubs with per-endpoint rate-limit docs and transparent pricing
Look for auto-generated SDKs and test consoles
Use organization workspaces to share keys securely

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API Marketplaces & Hubs

Rapid API Hub — Marketplace with per-API quotas & analytics
APILayer — High-quality commercial APIs with free tiers
Open Source APIs List — Curated list of free public APIs with categories
AnyAPI — Docs aggregator with endpoints & examples
APIList.fun — Fun & useful public APIs index
Free Public APIs (DevRes) — Categorized free API index
GitHub Topic: public-api — Discover repos exposing public APIs
NPM: openapi directories — Packages for API catalogs and schemas
Pipedream Components — Prebuilt actions; surface rate/quotas via UI
SwaggerHub Explore — Search and mock OpenAPI definitions