Communication

Free

It is an essential interface to host and participate in an AT&T web conference.

Free

Email server supporting IMAP, POP3 and SMTP protocols.

Free

Multiprotocol IM client that lets you chat with all your friends.

A small application that acts like a hotline for your clients.

This plug-in allows you to type text messages to your friends over voice clients

Manage multiple email accounts from a single interface.

Free

Powerful application that allows you to call and send sms text.

Free

Connect to Facebook, MySpace, Twitter, Flickr, AIM, Google Talk and more

Free

Instant messenger (IM) application.

Free

A social platform in which you can play games and socialize with others.

Free

Chat program with some interesting features.

Communicate and share files with others using HipChat services.

Free

Nice connector which manages your LinkedIn contacts from Outlook.

Allows the administrator to configure and schedule their reports.

It will help you manage several email accounts at once.

Free

It can sync your Microsoft Outlook contacts with Google Mail.

Free

Open source video conferencing and chat program.

Free

It is designed to send free SMS from your Windows OS to any mobile in India.

Free

Comodo Unite allows users to easily create a virtual private network.

Free

A tool designed to bring back the fun of online social networking.

Connects customers with a representative through video calling.

Free

Desktop messenger for Facebook.

Free

VoIP utility which allows you to make PC-to-phone calls.

Free

It allows you to access the chat without having to open Facebook.