API testing is crucial for optimal system performance. To help you navigate through, this article is an introduction to API testing terminology and scenarios.

This easy guide will talk you through how to run your API Functional Tests using Postman, Newman and BlazeMeter. Start with API Functional Testing in minutes.

Postman is an open source tool for API functional testing. This easy guide explains how to use Postman for API testing, for beginner and advanced users

Learn how and why to transform your team’s APIs into OpenAPI definition files. Get OpenAPI benefits by using these code libraries to transform your APIs.

Learn Apicurio Studio, an open source API designing tool. This guide will teach you to easily design your APIs by taking you through a step by step explanation.

Learn how to write your own OpenAPI definitions in the Swagger Editor. This practical guide for using the Swagger Editor will get you writing API in no time.

API developers? Discover why you should use OpenAPI for your API designing. Learn 5 reasons for choosing OpenAPI / Swagger for your API development needs.

Swagger/OpenAPI 3 was recently released. Read this blog post to learn what’s new and how to use it. Everything you need to know about OpenAPI/Swagger is here.