#rest-api

Scalar is an open-source API platform:　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　🌐 Modern REST API Client　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　📖 Beautiful API References　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　✨ 1st-Class OpenAPI/Swagger Support

The Block Editor project for WordPress and beyond. Plugin is available from the official repository.

⚡️ Express inspired web framework written in Go

Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.

Headless open-source eCommerce platform on top of PHP/Symfony/API Platform

An opinionated GoLang framework for accelerated microservice development. Built in support for databases and observability.

Blazing fast, instant realtime GraphQL APIs on all your data with fine grained access control, also trigger webhooks on database events.

Swagger Editor

Starknet full node designed for peak concurrency and efficiency

Apify API client for Python—Programmatically run Actors, manage and stream data from storages (datasets, key-value stores, request queues), schedule and monitor runs, and access the full Apify platform API. Sync and async interfaces with automatic retries and pagination.

Low code web framework for real world applications, in Python and Javascript

Parse Server for Node.js / Express

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

CakePHP: The Rapid Development Framework for PHP - Official Repository

gRPC to JSON proxy generator following the gRPC HTTP spec

🔥 🔥 🔥 A Free & Self-hostable Airtable Alternative

Javascript library to connect to swagger-enabled APIs via browser or nodejs

compact, modular JavaScript wrappers for the ArcGIS REST API

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

TypeScript libraries for Kiota-generated API clients.

Opensource IDE For Exploring and Testing API's (lightweight alternative to Postman/Insomnia)

🐙 The Go backend powering OCTO — an open workplace built for humans × AI agents. REST & WebSocket APIs, Lobster (AI agent) orchestration, and WuKongIM real-time messaging control plane.

Open-source persistent memory for AI agent pipelines (LangGraph, CrewAI, AutoGen) and Claude. REST API + knowledge graph + autonomous consolidation.

A framework for building JSON:API compliant REST APIs using ASP.NET and Entity Framework Core.

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

Generate Go client and server boilerplate from OpenAPI 3 specifications

Lightweight service virtualization/ API simulation / API mocking tool for developers and testers

Generate and validate ISO 20022 payment files (pain.001 v03-v12, pain.008) from CSV, SQLite, JSON, or Parquet. XSD and SEPA scheme validation, pain.002 and camt.053 parsers and builders, plus a CLI, REST API, MCP server, and LSP server for editor diagnostics. 🐍

A Python library for the Tableau Server REST API

:triangular_ruler: Ts.ED is a Node.js and TypeScript framework on top of Express to write your application with TypeScript (or ES6). It provides a lot of decorators and guideline to make your code more readable and less error-prone. ⭐️ Star to support our work!