
Description: LettuceMeet is a free online meeting scheduler and collaboration tool. It allows teams and individuals to easily find times to meet by aggregating availability and suggesting the best options.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

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: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API