awesome-api-devtools

: Test and auto-generate OpenAPI documentation for any API

: An editor for designing Swagger specifications

: A list of libraries and frameworks serving the Swagger ecosystem

: Visual Studio Code (VS Code) extension that provides support for the OpenAPI Specification

: Jetbrains plugin that provides support for the OpenAPI Specification

Dredd

: Validate API documentation written in API Blueprint against its backend implementation

: Convert between different API spec formats

: Supports API description formats including Swagger, OAI format, RAML, API Blueprint, IO Docs, WADL, Postman Collections and HAR 1.4 and more

: Free visual OpenAPI3 definition creation and editing tool

: Create, prototype, and share OpenAPI descriptions and JSON Schemas using a visual editor

Spectral

: Define rulesets to lint YAML or JSON, including OpenAPI 2.x, 3.x and AsyncAPI

: Verify the accuracy of your OpenAPI 3.x spec using real traffic, and automatically apply patches that keep it up-to-date

: Open-source tools that scans your OpenAPI spec and identifies issues with documentation, security, and SDK generation - and generates a report with fix suggestions

OpenAPI DevTools

: Browser extension that generates API specs for any app or website

: A repository of language-agnostic API specifications / Data Models

: Directory of API specs in OpenAPI(aka Swagger) 2.0 format

: Documentation and Test Consoles for Public APIs

rails-api

: Rails for API only applications

pliny

: Opinionated template Sinatra app for writing APIs in Ruby

grape

: An opinionated micro-framework for creating REST-like APIs in Ruby

ActiveModel::Serializer

: Brings convention over configuration to your JSON generation

rabl

: Generate JSON and XML from any ruby object

jbuilder

: Create JSON structures via a Builder-style DSL

roar

: Parse and render REST API documents using representers

: Toolkit that makes it easy to build Web APIs

Tastypie

: Webservice API framework for Django

restless

: A lightweight REST miniframework for Python

flask-restful

: Simple framework for creating REST APIs

Falcon

: Falcon is a low-level, high-performance Python framework for building HTTP APIs, app backends, and higher-level frameworks

Connexion

: Swagger/OpenAPI First framework for Python on top of Flask with automatic endpoint validation and OAuth2 support

apistar

: A smart Web API framework, designed for Python3

sanic

: Sanic is a Flask-like Python 3.5+ web server that's written to go fast

hug

: hug aims to make developing Python driven APIs as simple as possible, but no simpler

FastAPI

: FastAPI is a modern, fast (high-performance), web framework for building APIs with Python 3.6+ based on standard Python type hints

: Web and services application framework for Node.js

Restify

: Node.js REST framework specifically meant for web service APIs

: Fast, unopinionated, minimalist web framework for Node.js

: Realtime MVC Framework for Node.js

: Multi-transport Node.js API server with integrated cluster capabilities and delayed tasks

: To build

: Next generation web framework for Node.js

: Node.js framework for creating APIs and easily connecting to backend data sources

: A microservices toolkit for Node.js

: Build RESTful and real-time APIs through Socket.io or Primus

Deployd

: Deployd is the simplest way to build realtime APIs for web and mobile apps

Nest

: A modern node.js framework for efficient and scalable web applications built on top of TypeScript

Go-Json-Rest

: Thin layer on top of that helps building RESTful APIs easily

gocrud

: Go library to simplify creating, updating and deleting arbitrary depth structured data — to make building REST services fast and easy

sleepy

: RESTful micro-framework written in Go

restit

: Go micro framework to help writing RESTful API integration test

go-relax

: Framework of pluggable components to build RESTful API's

go-rest

: Small and evil REST framework for Go

go-restful

: A declarative highly readable framework for building restful API's

Goat

: Minimalistic REST API server in Go

Resoursea

: REST framework for quickly writing resource based services

: Zerver is a expressive, modular, feature completed RESTful framework

Fiber

: Fiber is an Express inspired web framework written in Go with

Colossus

: I/O and microservice library for Scala

: Fast, testable, Scala HTTP services built on Twitter-Server and Finagle

: The high velocity web framework for Java and Scala

: Simple, accessible and free web micro-framework

Skinny Micro

: Micro-web framework to build servlet applications in Scala

: Open-source toolkit for building REST/HTTP-based integration layers on top of Scala and Akka

Akka HTTP

: The Akka HTTP modules implement a full server- and client-side HTTP stack on top of akka-actor and akka-stream

Swagger Akka HTTP

: Swagger-Akka-Http brings Swagger support for Akka-Http Apis

: REST framework using type-safe bindings and asynchronous, non-blocking IO

: Framework for developing ops-friendly, high-performance, RESTful web services

: RESTful web services in Java

: RESTful Web Service using Spring, high-performance and little configuration needed

Metamug Mason

: Create REST APIs with JSP tags and SQL. Edit and hot deploy REST resources on the server

Scotty

: Micro web framework inspired by Ruby's Sinatra, using WAI and Warp

Spock

: Another Haskell web framework for rapid development

Servant

: A Type-Level Web DSL

Yesod

: The Haskell RESTful web framework

: Framework for building HTML5 apps, API backends and distributed systems

Plug

: A specification and conveniences for composable modules between web applications

Cowboy

: Small, fast, modular HTTP server written in Erlang

Gen Microservice

: This library solves the problem of implementing microservices with Erlang

Mochiweb

: Erlang library for building lightweight HTTP servers

PostgREST

: Serve a RESTful API from any existing PostgreSQL database

pREST

: pREST is a way to serve a RESTful API from any databases written in Go

xmysql

: Generate REST APIs for any MySQL Database

API Platform

: API framework on top of Symfony with JSON-LD, Schema.org and Hydra support

Dingo API

: A RESTful API package for the Laravel and Lumen frameworks

Fractal

: Fractal provides a presentation and transformation layer for complex data output, the like found in RESTful APIs, and works really well with JSON

Yii2 Framework

: Provides a whole set of tools to simplify the task of implementing RESTful Web Service APIs

: API Framework to build APIs for simple R Functions

: Build secure REST APIs on any platform with C#

Dream Factory

: Turn any database into an API platform

Swagger CodeGen

: Generate client libraries automatically from a Swagger-compliant server

AutoRest

: Generate client libraries for RESTful web services

OpenAPI Generator

: A community fork of Swagger Codegen to automatically generate API clients, server stubs and documentation for REST APIs given an OpenAPI/Swagger spec

: An HTTP client API for Ruby

faraday

: Simple, but flexible HTTP client library, with support for multiple backends

rest-client

: Simple HTTP and REST client for Ruby

heroics

: Ruby HTTP client for APIs represented with JSON schema

blanket

: A Ruby API wrapper

nestful

: Ruby HTTP/REST client

: A type-safe HTTP client for Android and Java

Restangular

: Restangular is an AngularJS service that simplifies common GET, POST, DELETE, and UPDATE requests with a minimum of client code

Refit

: The automatic type-safe REST library for .NET Core, Xamarin and .NET

WebAnchor

: Web Anchor provides type-safe, testable and flexible access to web resources

: Dart Frog is built on top of shelf and mason and is inspired by many tools including remix.run, next.js, and express.js

Serverpod

: Serverpod is a next-generation app and web server, built for the Flutter community. It allows you to write your server-side code in Dart, automatically generate your APIs, and hook up your database with minimal effort. Serverpod is open-source, and you can host your server anywhere

ReDoc

: OpenAPI/Swagger-generated API Reference Documentation

Swagger UI

: Dynamically generate documentation from a Swagger-compliant API

Slate

: Static site generated documentation for your API

: Documentation tool to write, publish, review, analyse and collect feedback on personalised customer-facing API docs

prmd

: JSON Schema tooling: scaffold, verify, and generate documentation from JSON Schema documents

Aglio

: An API Blueprint renderer with theme support that outputs static HTML

: Collaborative design, instant API mock, generated documentation, integrated code samples, debugging and automated testing

: API Documentation Hosting

: Hosted public API documentation for OAS (Swagger) and RAML specs

Docbox

: REST API documentation generator, using Markdown

widdershins

: REST API documentation generator from OpenAPI 3.0 / Swagger 2.0 / AsyncAPI 1.x / Semoasa 0.1.0 definition

Elements

: Web Components-based API documentation for OpenAPI 3.x/2.x

Hoppscotch

: API client for REST, GraphQL, Websocket, SSE, Socket.IO and MQTT

Hurl

: Hurl makes it easy to work with HTML content, REST / SOAP / GraphQL APIs, or any other XML / JSON based APIs

ATAC

: A feature-full TUI API client made in Rust. ATAC is free, open-source, offline and account-less

: Generate and host mock JSON data

: Desktop API testing tool

: API Studio for WebSocket, Rest API and GraphQL

: Command line HTTP client

: REST client for Mac

: REST API client for Mac, Windows, and Linux

httpy

: Programmable Command line HTTP client

: An HTTP-proxy for rest APIs - inspect and build mock APIs

: Generate mock HTTP endpoints

: Templated responses for testing various scenarios for HTTP requests

Prism

: a set of packages for API mocking and contract testing with OpenAPI v2 (formerly known as Swagger) and OpenAPI v3.x, including mock servers and a validation proxy

: Generate full mock REST APIs with just OpenAPI yaml/json spec files

: Easily inspect, test, and debug incoming webhooks

: Desktop API client and mocking tool

Json-Server

Full fake REST API with zero coding

: Desktop API mocking tool

: API Marketplace

: Traffic management, authorization and access control, monitoring, and API version management

: Ambassador is a specialized control plane that translates Kubernetes annotations to Envoy configuration. All traffic is directly handled by the high-performance Envoy Proxy

: API manager built in Java on top of Fuse ESB

Apigee127

: nodejs based API Gateway

: Open Source and Cloud-Native API gateway, based on the Nginx library and etcd

: Proxy for both request/response or streaming (long poll) of responses

Strongloop

: nodejs based API Gateway

: PHP based open source API management platform

: Empowers you to define routing and mediation rules in a variety of domain-specific languages, including a Java-based fluent API, Spring or Blueprint XML configuration files, and a Scala DSL

: Reliable, high Performance TCP/HTTP load balancer

: Fast web application server built on top of Nginx

: A distribution of Nginx with some advanced features

: Open-source, fast and scalable API gateway, portal and API management platform

Vulcand

: Programmatic load balancer backed by Etcd

Zuul

: An edge service that provides dynamic routing, monitoring, resiliency, security, and more

: An open-source management layer for APIs, delivering high performance and reliability

: A lightweight API Gateway written in Go by

fabio

: A fast, modern, zero-conf load balancing HTTP(S) router for deploying microservices managed by by eBay

Traefik

: Træfik (pronounced like traffic) is a modern HTTP reverse proxy and load balancer written in Go

Oathkeeper

: OIdentity & Access Proxy (IAP) that authorizes HTTP requests based on sets of rules. Integrates with ORY Hydra

: OpenAPI-Powered API Management platform for API Development, Deployment, and Documentation. Add auth, rate-limiting, and monetization to your API in minutes

: Free online static analysis of API contract files. Upload the file and get the report

API Security checklist

: Checklist of the most important security countermeasures when designing, testing, and releasing your API

Ory Hydra

: OAuth2 server with OpenID Connect written in Go

Cherrybomb

: Stop half-done API specifications! Cherrybomb is a CLI tool that helps you avoid undefined user behaviour by validating your API specifications

: API Performance Monitoring

: Automated API Testing

: A tool to embed privacy controls in your application code to detect PII as it enters and leaves your systems, preventing it from reaching unintended APIs, databases, data streams, or pipelines

: Continuously test and monitor your APIs after deployments and across environments

Hurl

: Hurl makes it easy to test HTML content, REST / SOAP / GraphQL APIs, or any other XML / JSON based APIs

Pyresttest

: YAML based REST testing and API microbenchmarking tool

OWASP Zaproxy

: A tool to test your API for known security vulnerabilities, with a great CI integration

RestQA

: Microservice API Testing tool focused on providing a great developer experience

: Test for breaking API changes in CI Pipelines

: API Developer Portal on top of API gateway, make your API gateway easier to be used by developers

: Instantly build an API Portal with SDKs, Live Code Samples, Test Cases, API Transformation and language specific Docs & Reference - tailored for your API

: Share verified-accurate OpenAPI documentation with your consumers. With Optic they can subscribe to your API and get notified when it changes

: OpenAPI-Powered API Management platform for API Development, Deployment, and Documentation. Zuplo's Developer Portal integrates key-management, usage analytics, and monetization for free