oas
The OpenAPI Specification (OAS), previously known as the Swagger Specification, is a specification for a programming language-agnostic, machine-readable interface definition language for describing, producing, consuming, and visualizing web services. OpenAPI documents describe API services and are represented in YAML or JSON formats.
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Swagger UI is a collection of HTML, JavaScript, and CSS assets that dynamically generate beautiful documentation from a Swagger-compliant API.
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Oct 14, 2026 - JavaScript
Turn any OpenAPI2/3 and Postman Collection file into an API server with mocking, transformations and validations.
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Oct 12, 2026 - TypeScript
🌐 Wikipedia for Web APIs. Directory of REST API definitions in OpenAPI 2.0/3.x format
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Apr 20, 2026
A 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.
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Oct 14, 2026 - TypeScript
vacuum is the worlds fastest and most versatile OpenAPI, Arazzo, AsyncAPI & JSON Schema linter, docs generator and toolkit. It tears through API specs at light speed. 100% compatible with Spectral rulesets, and OpenAPI 3.0, 3.1 and 3.2
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Oct 13, 2026 - Go
OAS-driven Frontend-NoCode Administration Console
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Jun 12, 2026 - TypeScript
libopenapi is a fully featured, high performance OpenAPI 3.2, 3.1, 3.0, Overlays and Arazzo parser, library, validator and toolkit for go applications.
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Oct 14, 2026 - Go
Port OpenAPI Specs to Postman Collections, inject test suite and run via Newman 👨🏽🚀
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Oct 13, 2026 - TypeScript
OpenAPI Spec Validator is a CLI, pre-commit hook and python package that validates OpenAPI Specs against the OpenAPI 2.0 (aka Swagger), OpenAPI 3.0 and OpenAPI 3.1 specification.
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Aug 17, 2026 - Python
PHP-code generator for Laravel framework, with complete support of JSON-API data format
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Aug 8, 2022 - PHP
A set of packages and tools for working with OpenAPI, Swagger, Arazzo and Overlay Specification documents.
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Oct 14, 2026 - Go
Directory of OpenAPI specifications for thousands of public APIs. Every API is machine-readable and scored for AI agents. CC0.
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Oct 14, 2026
OpenAPI - Getting started, and the specification explained
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Oct 13, 2026 - Markdown
API Generator - instantly generate REST and GraphQL APIs (openapi (OAS) 3.0.0)
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Dec 30, 2022 - JavaScript
Created by OpenAPI Initiative, Tony Tam, Darrel Miller, Mike Ralphson, Ron Ratovsky, Uri Sarid, Jason Harmon
Released August 10, 2011
Latest release about 1 month ago
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