Oculus Quest - An all-in-one VR system
calibre - Ebook manager, viewer & converter
Microsoft Hololens - Augmented reality headset from Microsoft
FBReader - FBReader is an e-book reader for various platforms. Features:
Trello - Infinitely flexible. Incredibly easy to use. Great mobile apps. It's free. Trello keeps track of everything, from the big picture to the minute details.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.