Weava - Workspace to highlight, organize & collaborate on your research articles.
LiquidText - LiquidText improves upon the reading experience by allowing users to better synthesize, visualize and collaborate over digital text.
Good Annotations - A online annotation tool that is perfect for providing feedback to your team.
Instashot - Access text from any image instantly.
Genius Annotations - Embed text annotations on your site. Annotate the web.
Clipdrop - Create stunning visuals in seconds