Addr - A collective and annotation-focus ePub reader
UX Flow Wireframe Prototyping System - Create beautiful user flows prototypes for your next project
Eplee - A simple and beautiful open-source ePub reader
draw.io - Online diagramming application
Buch - A Telegram book reader bot
UMLGraph - UMLGraph is a professional automated drawing tool that allows the designers the declarative specification and drawing of UML class and sequence diagram.