
Description: AnnotateIt is a free online annotation tool that allows users to annotate images, PDFs, and webpages. It has built-in collaboration features for teamwork and integrates with Google Drive and Dropbox for easy sharing.
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