calibre - Ebook manager, viewer & converter
Piranhas - Piranhas is a book price comparison tool
Apple Books - The all-new Apple Books has been redesigned to make finding, reading, and listening to books a beautiful, effortless experience on iPhone and iPad.
Crocodile.dev - Your team deserves the best code review tool
OverDRIVE - Make workspaces and sites automatically from Google Drive
Frog - Frog is a static web site generator written in Racket.