
Description: Papier is an open-source notes app that focuses on privacy. It allows you to take notes, organize them into notebooks, and sync them across devices while keeping the data encrypted locally.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Second Notes is a free, open-source note taking and knowledge management app. It allows users to create rich text notes, tag and search notes, sync notes across devices, and organize notes visually using a kanban-style board.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API