Description: Annotary is an open-source annotation tool that allows users to add text annotations and comments to web pages, PDFs, images, and more. It has features like collaboration, private/public annotations, groups, hierarchical comments, rich text formatting, and works on any operating system.
Type: software
Pricing: Open Source
Description: LiquidText is a PDF reader and annotator designed for active reading, analysis and research. It allows users to easily highlight, excerpt, organize and share passages from PDF articles and documents.
Type: software