← Explore by area/OpenAPI and REST API tooling

OpenAPI and Swagger tooling

31 repos

Libraries and tools for parsing, validating, generating code from, and working with OpenAPI (formerly Swagger) specifications. The cluster spans multiple languages—TypeScript and JavaScript implementations for API documentation and client generation, Go tools for specification parsing and validation, and supporting utilities across the ecosystem. Includes foundational projects like swagger-core and swagger-parser alongside modern tooling like apidom and oapi-codegen that help developers automate API contract management and reduce boilerplate in REST API development.

TypeScript · 11

Java · 5

JavaScript · 5

Go · 5

TypeSpec · 2

Python · 1

openapi ·214,167

rest-api ·155,407

openapi3 ·151,849

swagger ·127,012

openapi-specification ·94,198

rest ·93,398

api-client ·78,956

hacktoberfest ·69,905

restful-api ·66,957

javascript ·57,282

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swagger-api/swagger-core

Examples and server integrations for generating the Swagger API Specification, which enables easy…

Java

7,531

4,061 commits

swagger-api/swagger-parser

Swagger Spec to Java POJOs

Java

866

2,657 commits

swagger-api/swagger-codegen

swagger-codegen contains a template-driven engine to generate documentation, API clients and server…

Mustache

17,786

10,262 commits

swagger-api/apidom

Semantic parser for API specifications

TypeScript

100

5,179 commits

oapi-codegen/oapi-codegen

Generate Go client and server boilerplate from OpenAPI 3 specifications

8,568

1,062 commits

swagger-api/swagger-js

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

JavaScript

2,694

4,550 commits

Redocly/redoc

📘 OpenAPI/Swagger-generated API Reference Documentation

TypeScript

25,906

2,604 commits

OpenAPITools/openapi-generator

OpenAPI Generator allows generation of API client libraries (SDK generation), server stubs,…

Java

26,732

17,883 commits

swagger-api/swagger-client

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

JavaScript

2,694

4,553 commits

hairyf/genapi

API pipeline generator, which is used to convert OpenApi (v2~v3) and any input sources into TS/JS…

TypeScript

236 commits

Tufin/oasdiff

OpenAPI Diff and Breaking Changes

1,356

968 commits

openapi-json-schema-tools/openapi-json-schema-generator

OpenAPI JSON Schema Generator allows auto-generation of API client libraries with a focus on JSON…

Java

177

14,845 commits

stoplightio/spectral

A flexible JSON/YAML linter for creating automated style guides, with baked in support for OpenAPI…

TypeScript

3,205

1,463 commits

swagger-api/validator-badge

Validate your Swagger JSON/YAML today!

Java

227

334 commits

grpc-ecosystem/grpc-gateway

gRPC to JSON proxy generator following the gRPC HTTP spec

20,000

5,799 commits

gengo/grpc-gateway

gRPC to JSON proxy generator following the gRPC HTTP spec

19,998

5,838 commits

cloudflare/chanfana

OpenAPI 3 and 3.1 schema generator and validator for Hono, itty-router and more!

TypeScript

766

338 commits

Azure/azure-rest-api-specs

The source for REST API specifications for Microsoft Azure.

TypeSpec

3,092

14,391 commits

HarmoWatch/openapi-generator-cli

A node package wrapper for https://github.com/OpenAPITools/openapi-generator

TypeScript

1,973

1,338 commits

OpenAPITools/openapi-generator-cli

A node package wrapper for https://github.com/OpenAPITools/openapi-generator

TypeScript

1,973

1,338 commits

hey-api/openapi-ts

👨‍🚀 Turn API specifications into production-ready SDKs, validators, mocks, and more. 20+ plugins.…

TypeScript

5,383

7,233 commits

Azure/autorest

OpenAPI (f.k.a Swagger) Specification code generator. Supports C#, PowerShell, Go, Java, Node.js,…

TypeSpec

4,799

5,028 commits

astahmer/openapi-zod-client

not maintained anymore; use typed-openapi instead. Generate a zodios (typescript http client with…

TypeScript

1,178

580 commits

usebruno/bruno

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

JavaScript

46,841

4,735 commits

OAI/OpenAPI-Specification

The OpenAPI Specification Repository

Markdown

31,212

4,082 commits

swagger-api/swagger-samples

Samples for the various Swagger projects under swagger-api

JavaScript

544

178 commits

google/gnostic

A compiler for APIs described by the OpenAPI Specification with plugins for code generation and…

2,300

728 commits

long-woo/stc

🔧 A tool for converting OpenApi/Swagger/Apifox into code.

TypeScript

670 commits

Pactortester/swaggerjmx

Swagger/YApi convert jmx tool.

Python

115

89 commits

compactr/compactr.js

OpenAPI based binary serialization

TypeScript

108

77 commits

cloudflare/json-schema-tools

Packages for working with JSON Schema and JSON Hyper-Schema

JavaScript

341

108 commits