
Description: Pearltrees is a free online app that allows you to visually organize, share and discover web content. It acts like virtual corkboards where you can pin content into trees and organize it into topics or projects. It helps you save, organize and share websites, documents, photos and notes.
Type: Open Source Test Automation Framework
Founded: 2011
Primary Use: Mobile app testing automation
Supported Platforms: iOS, Android, Windows

Description: Diigo is a social bookmarking website that allows users to bookmark web pages and highlight or annotate parts of the pages. Users can categorize their bookmarks, search through bookmarks, and access bookmarks from any computer.
Type: Cloud-based Test Automation Platform
Founded: 2015
Primary Use: Web, mobile, and API testing
Supported Platforms: Web, iOS, Android, API