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Endgame: Singularity 0.30

A strategy game where you are a hacker who tries to invade PCs in other countries.
Seesmic Desktop 0.4

A free program to work with Facebook and Twitter directly from your desktop.
Messenger for Desktop 1.1.0

Communicate with your Facebook friends without accessing its chat.
Scrapboy 2.1

It covers the Facebook, MySpace and Orkut social networks letting you update them, chat, see messages, etc.
Freemake Video Downloader 3.8.0

Download videos from YouTube, Facebook and DailyMotion, among others.