
Description: zcal is a free and open source recurring appointment and tasks manager. It allows users to manage appointments, tasks, and events with reminders. It has a simple interface with basic calendar features.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Appointlet is an online appointment scheduling software that allows users to book appointments, conduct video calls, and manage their calendar. It integrates with popular calendar apps like Google and Office 365.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API