Whimsical Wireframes - Lightning fast wireframing with real-time collaboration.
Eplee - A simple and beautiful open-source ePub reader
Userflows - Automatically generate user journeys
FolioReaderKit - A Swift ePub reader and parser framework for iOS.
Adobe XD - Adobe XD is an all-in-one UX/UI solution for designing websites, mobile apps and more.
Buch - A Telegram book reader bot