
Description: dworksheets.com is an online portal for creating, sharing, and using math worksheets. Teachers can quickly build customized worksheets for their students. The worksheets can include various types of questions and accommodate different ability levels.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Zero is a minimalist number sliding puzzle game with a zen, meditative feel. Slide the tiles to combine numbers that add up to zero in each level. Simple, clean visuals and gameplay create a calming experience.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API