Chat & IM

IMVU
IMVU Inc.(Free)
Download
Does IMVU Really Work on Mac OS X?
Signal
Open Whisper Systems(Free)
Download
Free, privacy-focused messenger
Social Lite
GrandSoft Hong Kong Ltd.(Free)
Download
Social Lite: A Free Mac Program for Social Networking
Feem for Mac
FeePerfect(Trial version)
Download
Feem for Mac: Painless local sharing
LINE
LINE Corporation(Free)
Download
LINE allows you to share photos, videos, voice messages, contacts and your location information easily with your friends. LINE is one of the only services in which users can interact with fellow Mac
Spark
Igniterealtime(Free)
Download
Using Synchronization to Boost Phone Status Bug Scores
iChatUSBCam
Ecamm(Trial version)
Download
iChatUSBCam: Video-conference with your usb webcam
goober Messenger
Goober Networks(Free)
Download
goober Messenger: Multi-functional messenger with TV, radio and more
Microsoft Messenger
Microsoft(Free)
Download
How to Use Microsoft Messenger to Block Spam
Google Voice and Video
google(Free)
Download
Google Voice and Video - What You Need to Know