
Description: Flatsies is a web-based design and prototyping tool for creating mockups and wireframes. It provides a simple drag-and-drop interface for building website and app layouts without coding.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: LayerVault is a version control and backup service for designers. It allows you to easily store, track changes, revert to previous versions, and share PSD, Sketch, and other design files with your team.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API