
Description: Piskel is a free online editor for sprites and pixel art. It allows users to easily create animated sprites and pixel art with a simple interface and tools like layers, palettes, onion skinning, and export animations as GIFs or spritesheets.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Tilesetter is an open-source, free software for Linux used to create tilesets and tilemaps for 2D video games. It has a simple interface for drawing and editing tiles with features like layers, copy/paste, reshape, color picker, grids, and more.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API