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
Description: RefCanvas is a free, open-source collaborative whiteboard web application. It allows multiple users to draw, write, and share ideas on an online canvas in real-time. Features include drawing tools, text tools, image uploads, and reporting.
Type: software
Pricing: Freemium