
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: OnceHub is an appointment scheduling and calendar management software designed for small businesses. It allows users to automate scheduling, sync calendars, collect payments, and manage customer data from one centralized platform.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API