Public &amp; Open Source APIs

№ 001

Ollama

★ FeaturedGO

Get up and running with large language models locally across macOS, Linux, and Windows with simple CLI and API access.

171.0k· 16.0k forks

№ 002

Langflow

★ FeaturedPYTHON

Visual framework and drag-and-drop builder for rapid prototyping of multi-agent LLM workflows and apps.

147.8k· 8.9k forks

№ 003

Firecrawl

★ FeaturedTYPESCRIPT

The web data API for AI

116.8k· 7.3k forks

WEB FRAMEWORK

№ 004

FastAPI

PYTHON

FastAPI framework, high performance, easy to learn, fast to code, ready for production

98.0k· 6.6k forks

№ 005

Hoppscotch

Open source API development ecosystem

79.1k· 5.9k forks

CMS & CONTENT

№ 006

Strapi

JSON API Endpoint Submit Your API

The leading open-source headless CMS

/v1/apis · Developer API Hub

Public & Open Source APIs

Discover free, transparent, and open-source APIs across AI, payments, geocoding, auth, and cloud infrastructure.

// API ECOSYSTEM

Filter by API Domain

AI & Machine Learning

LLM endpoints, neural network APIs & vision models.

Payments & Commerce

Stripe-compatible billing, checkout & subscription APIs.

Auth & Identity

OAuth2, JWT authentication & single sign-on endpoints.

Geocoding & Maps

OpenStreetMap, reverse geocoding & IP location services.

Database & Storage

PostgreSQL REST/GraphQL interfaces & S3-compatible APIs.

Security & Monitoring

Vulnerability detection, rate limiting & API gateways.

Indexed API Projects (68)

Showing 6 of 68

№ 001

Ollama

★ FeaturedGO

Get up and running with large language models locally across macOS, Linux, and Windows with simple CLI and API access.

171.0k· 16.0k forks

№ 002

Langflow

★ FeaturedPYTHON

Visual framework and drag-and-drop builder for rapid prototyping of multi-agent LLM workflows and apps.

147.8k· 8.9k forks

№ 003

Firecrawl

★ FeaturedTYPESCRIPT

The web data API for AI

116.8k· 7.3k forks

WEB FRAMEWORK

№ 004

FastAPI

PYTHON

FastAPI framework, high performance, easy to learn, fast to code, ready for production

98.0k· 6.6k forks

№ 005

Hoppscotch

Open source API development ecosystem

79.1k· 5.9k forks

CMS & CONTENT

№ 006

Strapi