Pitchcard - Pitchcard is an online platform for pitching your ideas and getting quick feedback.
calibre - Ebook manager, viewer & converter
Pitchdeck - Pitch Deck is a web-based solution to you create engaging presentations.
FBReader - FBReader is an e-book reader for various platforms. Features:
PitchPerfect - PitchPerfect is a free guitar tuner that is developed by NCH Software. It combines automatic note detection with a user-friendly interface to provide accurate tuning for a variety of six-string instruments.
Google Play Books - Google Play Books lets you search, preview, and buy millions of books using Google Book Search.