
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: Tchisla is an open-source, cross-platform spreadsheet application with basic spreadsheet functionality like formulas, charts, and pivot tables. It aims to provide a free alternative to Microsoft Excel.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API