
Description: DraftSight is a free, professional-grade 2D CAD software that lets users create, edit, view and markup any kind of 2D drawings. It offers similar features and interface to premium tools like AutoCAD.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: ABViewer is a free, open-source Adobe PDF viewer for Windows. It provides basic PDF viewing and annotation capabilities in a lightweight application.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API