30 open-source projects similar to domaindrivendev/swashbuckle.aspnetcore, ranked by shared indexed features. Tags may describe platforms or build tools rather than the same primary purpose. Check each project’s use case, license, and deployment requirements before treating it as a replacement.
utoipa is a Rust API documentation tool used to generate machine-readable OpenAPI specifications. It functions as a specification generator and schema mapper that converts Rust structs and enums into compliant OpenAPI schemas. The project distinguishes itself by using procedural macros and traits to automate metadata extraction from code. It supports complex data modeling, including generics, polymorphism, and recursive type resolution, while synchronizing field renaming and tagging from serialization attributes. It also enables the composition of modular specifications, allowing multiple sma
This project is an automated documentation generator that synchronizes API reference materials with actual code behavior. By capturing live HTTP request and response data during the execution of existing test suites, it ensures that documentation remains accurate and consistent with the underlying application. The tool distinguishes itself by integrating directly into the test runner lifecycle, allowing developers to define API specifications and metadata within their test blocks. This approach enables a test-driven documentation workflow where API behavior is recorded and mapped to structure
swagger-core is a set of libraries for parsing, generating, and serializing OpenAPI specifications to automate REST API documentation. It provides tools to read, validate, and transform JSON or YAML specifications into programmable objects, as well as a generator that scans source code and annotations to create formal technical descriptions of an API. The project enables bi-directional specification serialization, allowing in-memory API definitions to be converted between native language objects and structured files. It uses a plugin-based scanning mechanism and annotation-driven generation t
Flasgger is a documentation framework for Flask applications that generates OpenAPI specifications and an integrated Swagger UI. It functions as a documentation generator and specification parser that extracts API schemas from route definitions, function docstrings, and external specification files. The tool allows API definitions to be maintained either within the source code using YAML blocks in docstrings or decoupled into standalone YAML files. It provides a browser-based interactive console for testing and exploring API endpoints directly from the web application. Beyond documentation,
springdoc-openapi is a library and toolset that analyzes Spring applications at runtime to produce machine-readable OpenAPI specifications in JSON and YAML formats. It serves as an integrator that extracts API metadata from Java source code and annotations to automate documentation for Spring-based services. The project distinguishes itself through its ability to aggregate API specifications from multiple remote microservices into a single unified interface and provide multiple visualization options, including Swagger UI and Scalar. It also offers a dedicated plugin for exporting documentatio
Salvo is a comprehensive Rust web framework for building asynchronous HTTP servers and web applications. It features a hierarchical web router that uses a tree-based structure to map requests to handlers and an asynchronous middleware pipeline based on the onion model for request and response pre- and post-processing. The framework is distinguished by its native support for modern network protocols, including a QUIC-based HTTP/3 implementation alongside HTTP/1 and HTTP/2. It includes an integrated OpenAPI documentation generator that extracts schemas directly from handler signatures to produc
Springfox is a Java library that automatically generates OpenAPI-compliant documentation for Spring-based REST services. It scans Spring controller annotations and model classes at runtime to produce machine-readable API specifications, and bootstraps an interactive Swagger UI interface on application startup for browsing and testing documented endpoints. The project provides a migration path from Swagger 2 to OpenAPI 3, replacing legacy annotations and dependencies with OpenAPI 3 equivalents through a starter dependency and configuration change. It integrates with Spring's application contex
NSwag is an OpenAPI toolchain for .NET that provides a suite of generators for converting OpenAPI specifications and JSON schemas into clients, server stubs, and structured documentation. It enables the creation of type-safe client libraries and data transfer objects, as well as the generation of OpenAPI specifications by analyzing .NET controllers. The project supports contract-first API development by generating server controller stubs from specifications and offers dedicated TypeScript API integration to ensure type safety in frontend applications. It also provides tools for hosting intera
Swag is a documentation tool for Go that generates standardized API specification files by parsing declarative annotations within source code. It functions by analyzing source files to extract metadata from comments and function signatures, transforming them into machine-readable formats such as JSON or YAML. This process ensures that technical documentation remains synchronized with the underlying code structure throughout the development lifecycle. The tool distinguishes itself through its ability to perform static source code parsing and type-system reflection, which allows it to map compl
Docfx is a documentation build tool that generates structured API reference pages from compiled .NET assemblies and XML documentation comments, while also functioning as a markdown static site generator for technical documentation. It combines automated API metadata extraction with markdown rendering to build developer portals and documentation sites, producing output simultaneously in HTML, JSON, and PDF formats from a single build configuration. The tool provides fine-grained control over which APIs appear in the generated documentation through visibility-based filtering, attribute-based ex
swagger-php is an OpenAPI specification generator and PHP API documentation library. It scans PHP source code attributes and annotations to produce standardized specification files and interactive API references. The tool functions as a schema inference engine that derives data types and schemas from native PHP type hints and generic blocks. It uses reflection-based static analysis to extract metadata without executing application logic and supports recursive schema inheritance to merge definitions from parent classes and interfaces. The project includes a command-line utility for exporting
AWS Powertools for Python is a utility framework designed for building production-ready Python functions on AWS Lambda. It provides a comprehensive suite of tools for observability, event parsing, routing, and idempotency management to streamline the development of serverless applications. The project distinguishes itself through specialized capabilities for event-driven architectures and AI agent orchestration. It enables the implementation of AI agents by exposing functions as tools via OpenAPI schemas and managing conversation states. Additionally, it features an idempotency library that p
gin-swagger is a Swagger UI middleware for the Gin web framework that serves as an OpenAPI 2.0 documentation generator. It provides an interactive REST API sandbox and a browser-based interface for visualizing API contracts and testing endpoints. The project allows for the hosting of multiple API definitions on a single router by assigning each a unique name. It enables the customization of the interface's visual presentation and behavior, including the control of expansion depth and authorization persistence. The middleware intercepts routes to deliver API definitions as JSON payloads and e
RAML is a declarative YAML-based specification language used for modeling RESTful interfaces and data structures. It functions as a contract-first API framework and modeling standard, establishing a formal agreement for service communication and a single source of truth before implementation begins. The specification enables the automation of functional mock servers and the generation of language-specific client SDKs directly from the definition files. It supports a modular approach to API design through the use of external libraries, overlays for extending contracts, and reusable traits and
NSwag is a toolchain for the .NET ecosystem designed to automate the generation of API documentation, server controllers, and typed client proxies from OpenAPI contracts. It functions as a contract-first API tool that enables the creation of server-side boilerplate and client libraries based on predefined specifications. The suite distinguishes itself through its ability to extract OpenAPI specifications from existing ASP.NET Core code via reflection and its capacity to generate type-safe TypeScript client proxies. It also provides an interactive documentation server that hosts and renders th
This is a JSON Web Token authentication package for the Django REST Framework that manages stateless user identities. It serves as an authentication provider and token manager used to issue and validate signed tokens to maintain user sessions across multiple requests. The project implements a dual-token lifecycle, issuing short-lived access tokens and long-lived refresh tokens to balance security with session persistence. It features token rotation to prevent replay attacks and a blacklisting system to invalidate compromised credentials. Additionally, it supports sliding-window expiration to
Huma is an OpenAPI REST framework for Go designed for building HTTP services with automatic OpenAPI 3.1 specification generation and JSON Schema validation. It serves as a toolkit for developing REST and RPC APIs with typed inputs and outputs, deriving interactive documentation directly from the source code. The framework distinguishes itself by automating the synchronization between implementation and documentation. It uses a content-negotiation engine to manage multiple serialization formats via client headers and employs a JSON Schema input validator to automatically verify request paramet
Flasgger is an OpenAPI documentation generator for Flask that creates interactive API specifications and Swagger UI documentation directly from application docstrings. It functions as an OpenAPI schema validator, verifying that incoming request data matches defined specifications and returning standardized error responses. The project includes a Marshmallow schema bridge to convert data structures into OpenAPI definitions and integrates a web interface for visualizing and testing API endpoints through an embedded interactive console. It further supports dynamic specification resolution, allow
Swagger-jsdoc is a documentation utility that automates the creation of standardized interface specifications for web services and RESTful endpoints. It functions as a documentation builder that extracts metadata directly from source code comments and configuration files to maintain synchronized interface definitions alongside application logic. The tool parses code structures and merges disparate configuration files to produce machine-readable documentation that adheres to industry standards. By utilizing rule-based validation, it ensures that the generated output complies with formal struct
This project is a REST-to-gRPC API gateway and JSON reverse proxy that translates RESTful HTTP requests into gRPC service calls. It functions as a protocol buffer proxy generator, providing the tools necessary to bridge JSON-based HTTP traffic with backend gRPC servers. The system distinguishes itself by automating the creation of reverse-proxy servers and stubs through protobuf-driven code generation. It also includes a dedicated OpenAPI specification generator that produces OpenAPI v2 and v3 documents from gRPC service definitions and annotations. The project covers a broad range of integr
Django Ninja is a high-performance framework for building type-safe REST APIs using Django. It functions as an OpenAPI API framework and a type-safe wrapper that utilizes Python type hints to handle request validation and response serialization. The project distinguishes itself by integrating Pydantic-based data modeling to convert JSON inputs into strongly typed Python objects. It automatically generates OpenAPI schemas and interactive documentation pages directly from defined endpoint signatures. The framework supports asynchronous request processing to handle concurrent tasks. It employs
mitmproxy2swagger is a tool that transforms captured mitmproxy network traffic into structured OpenAPI schemas for reverse-engineering REST APIs. It functions as an OpenAPI schema converter and network traffic documentation utility, extracting API endpoints and data structures from captured network packets to create formal technical references. The tool enables the reconstruction of undocumented APIs by converting intercepted HTTP request and response patterns into specifications. It supports merging multiple traffic capture files into a single schema to incrementally expand an API map and ut
APIStar is an OpenAPI framework providing a toolkit for building and verifying web APIs. It functions as an API schema validator, a traffic auditor, and a documentation generator to ensure compliance with API specifications and data types. The project converts OpenAPI and Swagger schemas into visual developer guides using customizable themes. It also implements a dynamic API client that adapts to defined schemas to send requests to remote servers. The framework includes capabilities for validating API schemas to identify structural mistakes and auditing incoming and outgoing web traffic agai
Fern is a toolset for managing API specifications, generating type-safe client libraries, and producing hosted developer documentation. It provides a utility for validating, transforming, and exporting API definitions into standardized OpenAPI formats, serving as a system to maintain a consistent source of truth for API designs. The project differentiates itself through an automated SDK distribution pipeline that publishes generated libraries to package managers such as npm, PyPI, Maven, and NuGet. It also includes an AI-powered search assistant trained on API and SDK specifications to answer
orpc is a contract-first API development framework for TypeScript that starts with a shared contract definition and generates type-safe clients and servers from that single source of truth. It guarantees end-to-end type safety, meaning inputs, outputs, errors, and streaming data are all checked at compile time across the client–server boundary. What distinguishes orpc from typical RPC frameworks is its ability to export contracts as OpenAPI specifications, to optimize server-side rendering by calling API handlers directly inside the server process, and to support real‑time bidirectional commu
API Platform is a headless content management system engine and framework used to build REST and GraphQL APIs. It utilizes schema-driven generation to automatically produce web endpoints based on predefined data model definitions. The platform focuses on semantic data modeling, using structured classes and ontologies to ensure information is organized for search engines and semantic web tools. It provides an automated OpenAPI specification generator and a declarative system for creating administration dashboards to manage data records without custom frontend code. The system includes capabil
This project is a PHP-based framework designed for the automated development of standardized web services. It functions as a backend toolkit that maps internal data models to REST and GraphQL endpoints, providing built-in support for resource management, data serialization, and hypermedia-aware API operations. The framework distinguishes itself through a metadata-driven architecture that uses class-level attributes to automatically derive API schemas, validation rules, and documentation. By analyzing these definitions at runtime, it generates machine-readable specifications and interactive in
This project is a comprehensive library of reference implementations and patterns for building web applications using the Go Fiber framework. It provides curated templates and implementation guides for creating REST APIs, web servers, and structured backend services. The repository serves as a practical resource for applying architectural patterns, including Clean and Hexagonal architectures, as well as port-and-adapter decoupling. It offers detailed examples for integrating common web features such as OAuth2 authentication, JWT verification, WebSockets for real-time communication, and server
Poem is a comprehensive toolkit for building type-safe web applications, APIs, and servers using the Rust programming language. It provides a foundation for developing web servers that handle HTTP requests with strong type safety. The framework distinguishes itself by supporting multiple communication protocols through a protocol-agnostic handler mapping. This allows a single internal logic to be exposed across HTTP, gRPC services using protobuf definitions, and the Model Context Protocol for AI model integration. Additionally, it includes built-in tooling for generating OpenAPI v3 specificat
ServiceStack is a high-performance .NET web framework designed for building type-safe APIs using strongly-typed request and response objects. It functions as a message-based API engine that decouples business logic from the transport layer, allowing services to be exposed via multiple protocols including HTTP, gRPC, and various message queue providers. The framework is distinguished by its type-safe API generator, which produces native client SDKs and data transfer objects from service metadata across multiple languages. It also includes a distributed service gateway for microservices orchest