
Description: CurlHub.io is an open-source tool that helps developers test APIs. It allows you to easily send HTTP requests like GET, POST, PUT, DELETE, etc. to API endpoints, view responses, and save requests for later use.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Beeceptor is a free online API mocking tool that allows you to create simulated APIs to test applications and prototypes without connecting to a real backend. It provides a simple interface to define API endpoints and responses.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API