* [Kiota v1.32.0](https://github.com/microsoft/kiota) – Command line tool for generating API clients from OpenAPI descriptions.

* [Platformatic v3.55.0](https://github.com/platformatic/platformatic) – Toolkit for building modern Node.js applications with minimal setup and maintenance.

* [kin-openapi v0.139.0](https://github.com/getkin/kin-openapi) – OpenAPI v2 and v3 implementation for Go with parsing, conversion, and validation.

* [@openapitools/openapi-generator-cli v2.34.0](https://github.com/OpenAPITools/openapi-generator-cli) – CLI tool that downloads and runs the OpenAPI Generator Java executable for generating API clients, servers, and documentation.

* [Fern 5.22.0](https://github.com/fern-api/fern) – Platform that converts API definitions into production-ready SDKs, interactive documentation, and AI-powered developer search.

* [Counterfact v2.14.0](https://github.com/counterfact/api-simulator) – Generates TypeScript routes from OpenAPI/Swagger specs and runs a stateful, hot-reloading mock API.

* [vacuum v0.28.0](https://github.com/daveshanley/vacuum) – Ultra-fast, lightweight OpenAPI and Swagger linter compatible with Spectral rulesets.

* [Redoc v2.5.3](https://github.com/Redocly/redoc) – Tool for generating documentation from OpenAPI definitions with a responsive three-panel layout.

* [libopenapi v0.37.0](https://github.com/pb33f/libopenapi) – High performance Go library for parsing, validating, and handling OpenAPI 2, 3, and 3.1 specifications.

* [runtime v0.32.0](https://github.com/go-openapi/runtime) – OpenAPI runtime interfaces for Go, supporting code generation and untyped client/server usage.

* [rspec-openapi v0.27.0](https://github.com/exoego/rspec-openapi) – Generate OpenAPI schema from RSpec request specs without requiring special DSL.

* [Portman v1.35.0](https://github.com/apideck-libraries/portman) – Tool to convert OpenAPI specs to Postman collections with contract and variation tests.

* [Zudoku v0.79.0](https://github.com/zuplo/zudoku) – OpenAPI-powered documentation framework with plugin extensibility and an integrated authenticated playground.

* [openapi_first v3.4.0](https://github.com/ahx/openapi_first) – Ruby gem for validating requests and responses against an OpenAPI description.

* [next-openapi-gen v1.4.0](https://github.com/tazo90/next-openapi-gen) – Automatically generates OpenAPI 3.0 documentation from Next.js projects with Zod and TypeScript support.

* [datadog-api-client-go v2.60.0](https://github.com/DataDog/datadog-api-client-go) – Go client for the Datadog API.

* [OpenAPI v1.23.1](https://github.com/speakeasy-api/openapi) – Go packages and CLI tools for reading, mutating, validating, upgrading, and applying overlays to API specification documents.

* [Fastify OpenApi Glue v4.11.3](https://github.com/seriousme/fastify-openapi-glue) – Plugin for Fastify that autogenerates configuration from OpenAPI specifications.

* [openapi-format v1.32.1](https://github.com/thim81/openapi-format) – Format OpenAPI documents by ordering fields, normalizing casing, filtering elements, splitting/bundling files, and applying overlays.

* [Mokapi v0.43.0](https://github.com/marle3003/mokapi) – API mocking tool using OpenAPI and AsyncAPI to simulate HTTP, Kafka, LDAP, and SMTP with JavaScript-driven behaviors.

* [oaswrap/spec v0.5.0](https://github.com/oaswrap/spec) – Lightweight, framework-agnostic OpenAPI 3.x builder for Go providing programmatic, type-safe API documentation generation.

* [PowerX v1.0.2](https://github.com/ArtisanCloud/PowerX) – AgentOS-based platform for AI agents and CRM workflows, providing MCP, gRPC/REST, SDKs, IAM/RBAC, event bus, and DB/flow layers.

* [Gram server@0.64.0](https://github.com/speakeasy-api/gram) – Platform for creating, curating, and hosting MCP servers with a TypeScript SDK, OpenAPI support, and tools to build agent-accessible toolsets.

* [ApiDOM v1.11.2](https://github.com/swagger-api/apidom) – Unifying structure for describing APIs across multiple description languages and serialization formats.

* [apigen-ts v1.3.1](https://github.com/vladkens/apigen-ts) – Generate a single-file, fully typed TypeScript fetch client from OpenAPI/Swagger supporting v2, v3, and v3.1.

* [openapi-sampler v1.7.4](https://github.com/Redocly/openapi-sampler) – Generates sample payloads and responses from OpenAPI and JSON Schema definitions.

* [libopenapi-validator v0.13.8](https://github.com/pb33f/libopenapi-validator) – OpenAPI validation extension that validates HTTP requests, responses, OpenAPI documents, and JSON/YAML schemas.

* [OpenAPI Changes v0.2.7](https://github.com/pb33f/openapi-changes) – Tool that detects and reports changes between OpenAPI and Swagger specifications, offering terminal and HTML reports.

* [LoopBack @loopback/typeorm@0....](https://github.com/loopbackio/loopback-next) – Framework for building modern applications requiring complex integrations.

* [@himenon/openapi-typescript-code-generator @himenon/openapi-typ...](https://github.com/Himenon/openapi-typescript-code-generator) – Library that generates TypeScript types and code from OpenAPI v3.0.x specifications.

* [typed-openapi typed-openapi@2.2.7](https://github.com/astahmer/typed-openapi) – Typescript API client generator from OpenAPI specs with optional runtime validation support.

* [Tracecat 1.0.0-beta.49-rc.2](https://github.com/TracecatHQ/tracecat) – Modern automation platform for security and IT engineers with YAML templates, no-code workflows, lookup tables, and case management.

* [Shuffle Automation v2.2.2-rc1](https://github.com/Shuffle/Shuffle) – General-purpose security automation platform for security teams, offering workflow editor, OpenAPI-based app creation, and resource sharing.

* [Angular OpenAPI Client Generator zod-v0.0.9](https://github.com/ng-openapi/ng-openapi) – OpenAPI-based Angular TypeScript client generator producing typed models and injectable services.

* [Scalar release-2026-05-14-9...](https://github.com/scalar/scalar) – OpenAPI/Swagger-based interactive API reference and offline-first REST client with testing, code examples, and framework integrations.

* [@switchbot/homebridge-switchbot v5.1.0-beta.11](https://github.com/OpenWonderLabs/homebridge-switchbot) – Homebridge plugin for accessing SwitchBot devices from HomeKit.

* [feTS release-178040939939...](https://github.com/ardatan/feTS) – TypeScript HTTP framework focused on end-to-end type safety, easy setup, high performance, and strong developer experience.

* [microsoft/kiota-typescript @microsoft/kiota-ser...](https://github.com/microsoft/kiota-typescript) – TypeScript libraries for Kiota-generated API clients.