
Description: Shelvable is a free and open-source self-hosted knowledge management tool. It allows you to create notes and organize them into shelves (categories). Key features include full-text search, filtering notes, wiki-style linking between notes, and version control.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Stack is a task manager app for Mac that organizes files, notes, links, and to-do lists in one unified workspace to help you stay focused on your projects. It uses tags to organize content and provide quick search and access.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API