WinMerge - WinMerge is an open source differencing and merging tool for Windows.
SoundCloud - Enjoy music & follow favourite artists
Meld - What is Meld? Meld is a visual diff and merge tool targeted at developers.
SoundCleod - SoundCleod is a Mac OS X application which brings SoundCloud to the desktop without using a browser.
Beyond Compare - Beyond Compare allows you to compare files and folders.
SoundNode - SoundCloud desktop app (OS X, Windows, Linux)