Alternative Ways to Generate Code from OpenAPI Specification

Download our swagger file based on Open API Specification and use code generator tool to generate code of your choosen programming language..

Besides using ChatGPT, here are several alternative tools to generate code from OpenAPI specifications:

1. OpenAPI Generator

• Website: https://openapi-generator.tech/
• Description: Widely-used tool for generating server stubs, client SDKs, and docs.
• Supports: 50+ languages and frameworks.
• Usage:

  openapi-generator-cli generate -i openapi.yaml -g spring -o ./output

2. Swagger Codegen

• Website: GitHub
• Description: The original codegen project, now less active than OpenAPI Generator.
• Usage:

  swagger-codegen generate -i openapi.yaml -l java -o ./output

3. SwaggerHub

• Website: https://swagger.io/tools/swaggerhub/
• Description: Commercial SaaS platform for collaborative API design and code generation.
• Features: Online editor, integrations, team collaboration.

4. Postman (API Builder)

• Website: https://www.postman.com/
• Description: Import OpenAPI, generate test collections, export snippets.
• Note: Great for testing and client-side code snippets.

5. Stoplight Studio

• Website: https://stoplight.io/
• Description: Visual OpenAPI editor with mock server and codegen tools.

6. NSwag (for .NET)

• Website: GitHub
• Usage:

  nswag openapi2csclient /input:openapi.json /output:MyClient.cs

• Best for: .NET developers needing client/server generation.

Comparison Table