Tweet Cabinet Icon
Archive public twitter timelines.
Paid
Jitsi Icon
Internet phone and instant messenger (was SIP Communicator).
Free
XChat Azure Icon
IRC chat client ported from UNIX (was XChat Aqua).
Free
Viber Icon
Send messages and make calls for free to other Viber users.
Free
ejabberd Icon
Instant messaging server.
Free
Textual IRC Client Icon
Lightweight IRC client.
Paid
VChat Icon
CU-SeeMe video conferencing app.
Free
Mumble Icon
Voice communications tool primarily intended for use while gaming.
Free
Chatology Icon
Search your Messages chat history with ease.
Demo
LocalChattr Icon
Simple LAN chatrooms.
Paid
LimeChat Icon
Chat using this RubyCocoa IRC client.
Free
Cryptocat Icon
Encrypt instant messages with Open-Source security.
Free
SIPE for Adium Icon
Protocol plugin for Office 365, Lync, OCS, and more.
Free
Adium Icon
Popular instant messaging client supports a plethora of services.
Free
TorChat Icon
Unofficial port of torchat.
Free
IM for Facebook Icon
Chat with your Facebook friends on your Mac (was Facebook Messenger).
Free
Facebook Messenger Icon
Chat with your Facebook friends on your Mac.
Free
GoToMeeting Icon
Online meeting, desktop sharing, and video conferencing software.
Demo
Colloquy Icon
Lightweight IRC chat client.
Free
VIPole Secure Messenger Icon
Secure instant messenger.
Free
Sococo Icon
Virtual office software.
Free
ZoIPer Icon
SIP and IAX/IAX2 software phone.
Free
Tweetings Icon
Extensive Twitter client.
Paid
Psi Icon
Jabber chat client.
Free
Push To Talk Icon
Push to talk voice chat.
Paid
TwitHaven Icon
Internal messaging system.
Trial
emesene Icon
Chat client that supports a multitude of services.
Free
PalaceChat Icon
Visual chat client for The Palace.
Trial
Incoming! Icon
a Twitter search client
Trial
HelTweetica Icon
A full-featured free Twitter app for your Mac
Free
Luscious SMS Icon
Luscious SMS provides you the ability to send SMS
Trial
Scalare Icon
A minimal (and elegant) Twitter client
Free
eyeBeam Icon
CounterPath's eyeBeam a multimedia communicat
Paid
QQ Icon
Connect to the Chinese social network.
Free
ooVoo Icon
Robust video conferencing.
Free
Mumble Icon
Voice communications tool primarily intended for use while gaming.
Free
Proteus Icon
Chat with AIM, Jabber, Yahoo, ICQ, and more.
Free
Camfrog Video Chat Icon
Audio and video chat solution.
Demo
LINE Icon
Free voice, video, and messaging service.
Free
Twist Icon
Communication for teams.
Free
More