LiquidText - LiquidText improves upon the reading experience by allowing users to better synthesize, visualize and collaborate over digital text.
Monosnap - Monosnap is a comprehensive screenshot taking software system that provides users with a fast and accessible way to take screenshots whenever they want. Read more about Monosnap.
Clipdrop - Create stunning visuals in seconds
Annotate - Annotate (formerly know as Glui) is the simplest way to capture, annotate and share screenshots.
Slack E-mail Add-ins - Quickly forward emails and attachments to Slack
LabelMe Annotation Tool - LabelMe is an annotation tool writen in Javascript and Perl for online image labeling.