Go · PyPI · npm100Exceptionalhealth index

go-gitea/giteaGit with a cup of tea! Painless self-hosted all-in-one software development service, including Git hosting, code review, team collaboration, package registry and CI/CD
Go★ 58KSep 16, 2026
npm · crates.io100Exceptionalhealth index

scalar/scalarScalar is an open-source API platform: 🌐 Modern REST API Client 📖 Beautiful API References ✨ 1st-Class OpenAPI/Swagger Support
TypeScript · Vue★ 16.1K↓ 8.3M/moSep 16, 2026
PyPI99Exceptionalhealth index
Python★ 8,423↓ 2.1M/moAug 27, 2026
npm · Packagist99Exceptionalhealth index

swagger-api/swagger-uiSwagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.
JavaScript★ 29K↓ 49.8M/moSep 16, 2026
Packagist98Exceptionalhealth index

api-platform/coreThe server component of API Platform: hypermedia and GraphQL APIs in minutes
PHP★ 2,574↓ 1M/moSep 11, 2026
npm98Exceptionalhealth index
JavaScript · TypeScript★ 9,461↓ 49.5K/moAug 28, 2026
npm97Exceptionalhealth index

orval-labs/orvalorval is able to generate client with appropriate type-signatures (TypeScript) from any valid OpenAPI v3 or Swagger v2 specification, either in yaml or json formats. 🍺
TypeScript★ 6,401↓ 61.5M/moAug 28, 2026
PyPI97Exceptionalhealth index
Python★ 3,601↓ 3.4M/moSep 16, 2026
NuGet96Exceptionalhealth index
C#★ 5,496Aug 28, 2026
PyPI96Exceptionalhealth index

fastapi/fastapiFastAPI framework, high performance, easy to learn, fast to code, ready for production
Python★ 102.4K↓ 414M/moSep 16, 2026
npm96Exceptionalhealth index
JavaScript★ 1,092↓ 9.7M/moAug 27, 2026
Go · RubyGems96Exceptionalhealth index
Go★ 20KOct 20, 2026
npm96Exceptionalhealth index
TypeScript · Vue★ 65K↓ 31.5K/moSep 16, 2026
npm96Exceptionalhealth index

stoplightio/prismTurn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
TypeScript★ 5,017↓ 3.3M/moAug 27, 2026
npm96Exceptionalhealth index

stoplightio/spectralA flexible JSON/YAML linter for creating automated style guides, with baked in support for OpenAPI (v3.1, v3.0, and v2.0), Arazzo v1.0, as well as AsyncAPI v2.x.
TypeScript★ 3,205↓ 79.5M/moSep 16, 2026
npm96Exceptionalhealth index
JavaScript★ 2,694Aug 27, 2026
PyPI95Exceptionalhealth index

koxudaxi/datamodel-code-generatorGenerate Pydantic v2 models, dataclasses, TypedDict, and msgspec.Struct from OpenAPI, JSON Schema, GraphQL, Avro, Protobuf, and raw JSON/YAML/CSV.
Python★ 4,007↓ 18.7M/moAug 28, 2026
npm94Exceptionalhealth index

Azure/oavTools for validating OpenAPI (Swagger) files.
TypeScript★ 104↓ 41.3K/moSep 12, 2026
npm94Exceptionalhealth index

asyncapi/modelinaA library for generating typed models based on inputs such as AsyncAPI, OpenAPI, and JSON Schema documents with high customization
TypeScript★ 448↓ 667.3K/moSep 25, 2026
npm94Exceptionalhealth index
TypeScript★ 144↓ 5.6M/moSep 11, 2026
—94Exceptionalhealth index
C#★ 239Sep 11, 2026
npm94Exceptionalhealth index

mockoon/mockoonMockoon is the easiest and quickest way to run mock APIs locally. No remote deployment, no account required, open source.
TypeScript · HTML★ 8,389↓ 847.8K/moSep 7, 2026
Go94Exceptionalhealth index
Go · Go Template★ 8,542Aug 28, 2026
npm94Exceptionalhealth index
TypeScript★ 100↓ 24.5M/moOct 12, 2026
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zuplo/zudokuFramework for building high quality, interactive API documentation.
TypeScript★ 591↓ 130.7K/moSep 12, 2026
npm93Exceptionalhealth index

Azure/autorestOpenAPI (f.k.a Swagger) Specification code generator. Supports C#, PowerShell, Go, Java, Node.js, TypeScript, Python
TypeSpec · TypeScript★ 4,798Aug 28, 2026
PyPI93Exceptionalhealth index
Python★ 4,042↓ 13.6M/moOct 18, 2026
Maven · npm93Exceptionalhealth index
Java · Vue★ 13.5KAug 27, 2026
Packagist · npm93Exceptionalhealth index
PHP★ 2,367↓ 1.4M/moSep 10, 2026
npm · Go93Exceptionalhealth index
Go★ 322↓ 2.5M/moAug 27, 2026