Free
Chatology
Efficient Chat Management with Chatology
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Messaging on desktop without losing your flow
Universal Chat Software for Social Media Applications
Tab for Google Plus - Add Google+ to your menu bar
Simultaneous Social Media Posting
FaceTop - Add your Facebook feed to your desktop for free
A full version program for Mac, by Raj Kumar Shaw.
Get Onto GroupMe. Send Large Files With A Sleeker Client.
Free Application to Browse Instagram Feeds
Reddit Viewer