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

Open-Source API Development Ecosystem • https://hoppscotch.io • Offline, On-Prem & Cloud • Web, Desktop & CLI • Open-Source Alternative to Postman, Insomnia

Get a full fake REST API with zero coding in less than 30 seconds (seriously)

🚀 Strapi is the leading open-source headless CMS. It’s 100% JavaScript/TypeScript, fully customizable, and developer-first.

🥧 HTTPie CLI — modern, user-friendly command-line HTTP client for the API era. JSON support, colors, sessions, downloads, plugins & more.

Web APIs for Django. 🎸

REST API for any Postgres database

A frontend Framework for single-page applications on top of REST/GraphQL APIs, using TypeScript, React and Material Design

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs, documentation and configuration automatically given an OpenAPI Spec (v2, v3)

swagger-codegen contains a template-driven engine to generate documentation, API clients and server stubs in different languages by parsing your OpenAPI / Swagger definition.

Proxy server to bypass Cloudflare protection

eBPF-powered network observability for Kubernetes. Indexes L4/L7 traffic with full K8s context, decrypts TLS without keys. Queryable by AI agents via MCP and humans via dashboard.

The no-magic web API and microservices framework for Python developers, with a focus on reliability and performance at scale.

🕸️ Create REST and GraphQL APIs, scaffold Jamstack webapps, stream changes in real-time.

bottle.py is a fast and simple micro-framework for python web-applications.

A damn simple library for building production-ready RESTful web services.

Light, flexible and extensible ASGI framework | Built to scale

Mockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.

Java DSL for easy testing of REST services

The Web API toolkit. 🛠

package for building REST-style Web Services using Go

PostgreSQL ➕ REST, low-code, simplify and accelerate development, ⚡ instant, realtime, high-performance on any Postgres application, existing or new, MCP server

TheHive is a Collaborative Case Management Platform, now distributed as a commercial version

Add an AngularJS admin GUI to any RESTful API

Automated generation of real Swagger/OpenAPI 2.0 schemas from Django REST Framework code.

blazingly fast backends in zig

This Bundle provides various tools to rapidly develop RESTful API's with Symfony

The server component of API Platform: hypermedia and GraphQL APIs in minutes

A free, native Apple macOS app for testing HTTP/REST endpoints

Self-Hosted API Management for Builders