VoIP services

Skype is a software that lets you make free PC to PC calls to anyone else on Skype, anywhere in the world. And even though the calls are free, they are really excellent quality. If you and your friends, family or business contacts are using webcams, you can also make free video calls. You can even call landlines and mobile phones at really cheap per minute rates (and there's no setup or subscription fee). Skype is available for Windows, Mac and Linux (video calls are currently available only to Windows and Mac users). Free download.

AIM Pro is the advanced version of AIM. With this IM you can experience high level quality and robust communication. It includes the familiar features of the AIM service, and adds powerful new features for busy professionals.

Google Talk enables you to call or send instant messages to your friends for free, anytime, anywhere in the world. Google Talk allows you to get in touch with an IM, email, or a call (only between Google Talk users) and supports files transfering. Google Talk requires Windows XP/2000 but Mac and Linux users can connect to Google Talk using other IM clients. Free download.

Google Voice is a telecommunications service that provisions a U.S. phone number, chosen by the user from available numbers in selected area codes, free of charge to each user account. Inbound calls to this number are forwarded to other phone numbers of the subscriber. Outbound calls may be placed to domestic and international destinations by dialing the Google Voice number or from a web-based application.

Inbuilt in Win XP messenger, that enables to share files, documents, and pictures, communicate with voice and video, share an application or whiteboard, get help with Remote Assistance, set up alerts

An internet telephone. As simple as an instant messenger. You can make free calls to all Gizmo users and features free voicemail and conferences calls from your desktop. Gizmo also provides inexpensive add-ons that let you make and receive phone calls from any mobile and landline phone. At the moment you can make free calls to 60 countries. It works on Windows, Mac and Linux. Free download.

Office Communicator 2007 is a unified communications client that helps people be more productive by enabling them to communicate easily with others in different locations or time zones using a range of different communication options, including instant messaging (IM), voice, and video. Integration with programs across the 2007 Microsoft Office system gives information workers many different ways to communicate with each other via a consistent and simple user experience.

Yahoo! Messenger is a popular instant messaging client and protocol provided by Yahoo!. Yahoo! Messenger is free of charge and can be downloaded and used with a generic "Yahoo! ID", which also allows access to other Yahoo! services, such as Yahoo! Mail, where users can be automatically notified when they receive new email. Yahoo instant messenger also includes a security feature which allows the user to be "invisible" to whoever they choose.

fring is a mobile internet service & community that enables you to access & interact with your social networks on-the-go, make free calls and live chat with all your fring, Skype, MSN Messenger, Google Talk, ICQ, SIP, Twitter, Yahoo! and AIM friends using your handset’s internet connection rather than costly cellular airtime minutes.