
Description: ImagePipe is a free and open-source image optimization tool. It can losslessly compress images to reduce file sizes, while retaining full quality. ImagePipe has a simple drag-and-drop interface and supports batch optimization of multiple images.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Metapho is a free graphics editing program with a range of tools and capabilities for image optimization, photo editing, retouching, and more. It has similar features to Photoshop but is open source and cross-platform.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API