A collective list of free APIs
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Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia
🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.
LocalAI is the open-source AI engine. Run any model - LLMs, vision, voice, image, video - on any hardware. No GPU required.
The open-source, cross-platform API client for GraphQL, REST, WebSockets, SSE and gRPC. With Cloud, Local and Git storage.
An open-source engine that turns continuous content streams into search and monitoring. Durable ingestion, hybrid search, alerts, and plugins for formats, models and business rules.
Scalar is an open-source API platform: 🌐 Modern REST API Client 📖 Beautiful API References ✨ 1st-Class OpenAPI/Swagger Support
A curated list of free public APIs — searchable, community-maintained, with a free JSON API.
🚀🎉📚 APITable, an API-oriented low-code platform for building collaborative apps and better than all other Airtable open-source alternatives.
Open-source search database for full-text, vector, and hybrid search with real-time indexing and SQL.
Headless open-source eCommerce platform on top of PHP/Symfony/API Platform
The Developer Platform for Modern APIs
CKAN is an open-source DMS (data management system) for powering data hubs and data portals. CKAN makes it easy to publish, share and use data. It powers catalog.data.gov, open.canada.ca/data, data.humdata.org among many other sites.
Open-source reporting platform to build and share live dashboards from APIs, SQL and NoSQL databases, with powerful AI assistant, scheduling, and embeddable charts 📈📊
Yaade is an open-source, self-hosted, collaborative API development environment.
zerocode-tdd is a community-developed, free, open-source, outcome-driven automated testing framework for Data Pipelines, ETL, REST API, Kafka(Data Streams), Databases and Load scenarios. all defined in simple JSON or YAML — with zero coding.
Healthcare data infrastructure for next generation care delivery.
302API 开发者资料与接入示例：Python / Node.js / cURL、客户端配置、前端组件与本地账单验算器。Apache-2.0 开源，再分发请保留 NOTICE 署名。
👤 Framework to Generate Random Users - An Unofficial Swift SDK for randomuser.me
Single open-source GraphQL API to connect CRMs to your SaaS
📊 Showcase your open source contributions with beautiful SVG tables. Display your merged PRs from prestigious projects.
The open-source map of the AI developer tooling ecosystem
API for Onloc. Manages all of your precious location data.