
Description: Piranhas is an open-source alternative to Trello for kanban-style project management. It provides boards, lists, and cards to organize tasks and projects in a visual way.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: OfferUp is a popular peer-to-peer marketplace app that allows users to buy and sell goods locally. Users can list items for sale, browse listings, and communicate with potential buyers all within the OfferUp platform.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API