
Description: KDiff3 is a free open source diff and merge tool for Windows, Mac, and Linux. It allows users to compare files and directories, shows differences in side-by-side and inline layouts, and helps merge changes between versions. KDiff3 supports Unicode, auto-detection of encodings, and editing actions during merges.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: VisualDiffer is a free, open source cross-platform visual diff tool for developers. It allows comparing images, directories, and version controlled projects to detect file changes over time. Key features include split screen viewing, pixel and file differencing, filtering file types, ignoring file differences, etc.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API