
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: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: RequestB.in is an open-source API testing tool that allows developers to easily test REST and GraphQL APIs. It provides an intuitive interface to create requests, assert responses, autogenerate code snippets, mock servers, and visualize API flows.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API