Set your conversations free.  Skype is a multi-modal communication tool that allows you to communicate via text, voice, or video. With Skype’s free software, you can connect with people in a variety of ways and never worry about cost, time or distance. Share the love and get your friends to download Skype so you can talk, IM or make video calls for nothing. You can also make local, long distance and international calls to phones and cell phones at great rates too. http://www.skype.com

See how Oprah Winfrey is using Skype.
How mobile Skype Robots are being used as a remote home security monitor
How a blind adventurer is using Skype as his “eyes.”
How it is used to teach Piano around the globe
How a band can practice remotely
How it is connecting people in Iraq with their families back home.
How you can Speak in other languages.
Integrate Skype with your media center
Use VoIP to tutor students
Add voice to your MySpace page
click to fax from any web page
Recover a stolen laptop
Create your own wake up call
Bring people closer together
Or just plain make you laugh.

Friends are an instant away on Yahoo! Messenger.  Make free PC-to-PC calls around the world to friends on Yahoo! Messenger.  Select a friend in your contact list and click the Call button to get started.  Call regular and mobile phones too. Forward calls to your mobile or landline.  Get a phone number for Yahoo! Messenger.  Also includes voicemail, sound special effects, background music for calls, IM, video conferencing, and a host of other plug-ins.  http://messenger.yahoo.com/

A Google approach to instant communications.  You can make free PC-to-PC voice calls, and talk to anyone else for free who's online and has the Google Talk client. It includes IM, voicemail, can be embedded into your web page or iGoogle page, an integrated with gMail. Google Talk uses open standards for instant messaging and voice calling. That means anyone can build applications for the Google Talk network. There is also an application for blackberry’s. http://www.google.com/talk/

Pay-as-you-go calling.  Start with only $5 in credit*, choose the country you’re calling and enter your friend’s number into the Call Center in AIM. Click the "Dial" button and get talking! See your credit amount while you talk. Add credit anytime on your dashboard.

http://call-out.aim.com/?promo=824558

Windows Live Messenger.  Includes IM, SMS, sharing, video calling, PC to PC calling, and PC to phone or mobile phone calling virtually anywhere in the world for $0.02 a minute. 

http://www.msnmessenger-download.com/Messenger/Post/

iChat – because not being there is half the fun.  iChat AV brings multi-way video and audio conferencing directly to your Desktop with stunning, true-to-life picture and crystal-clear conversation. Perhaps you will read bedtime stories to your grandchildren without concern for long distance charges. Or check in with home base from a hotel room when you’re away on business. iChat AV lets you can chat with folks thousands of miles away in a full-screen personal video conference over any broadband connection.  iChat uses the AAC-LD wideband codec that samples a full range of vocal frequencies, to deliver the clearest possible sound during audio chats.

http://www.apple.com/macosx/features/ichat.html

Linking people connecting minds.  MediaRing Talk offers IM, free PC to PC calls, and a convenient and inexpensive means to call any phone number – fixed or mobile; in the world using its PC-to-Phone (MRTalk Out) feature. The rates are highly competitive, no commitments and above all the call quality is great.  This is a Singapore service.  https://talkmember.mediaringtalk.com/mytalk/index.php

Try demo of web page embedded phone.

Raketu’s Multi-Messenger allows you to chat to all your friends throughout the world whether they are using Yahoo, MSN, Google, AOL, Skype, ICQ or Jabber. It provides calling, any IM, SMS, TV, VOD, info feeds, and more – all in one. http://www.raketu.com/en/im-sms.php

A multi-fetured ad based communication tool.  Globe7 Phone enables you to make Free PC-PC Calls and cheap calling to any landline or mobile across the globe. The tiny application is integrated with SoftPhone, IM, Videos, Games, News and many more opt-in widgets like Live TV, Live Radio, Astrology, Forex, Movies, Pets, Recipes, Sports for  your complete entertainment, information and communication.  http://www.globe7.com/

Ad supported International calling.  Although currently only available in Turkey, tuitalk is expected to enter 37 countries, including the U.S. and Canada. The service allows anyone with a computer to call phone numbers in many countries around the world for free.  The service is supported by a 30-second ad at the beginning of the call  http://www.tuitalk.com/

FREE PC to Phone calls to any North American phone number from anyplace on the planet.

All you need is a computer equipped with a microphone (or a headset  with mic) and a connection to the Internet using Internet Explorer.

No software to download or install.  http://labs.jaduka.com/earthcaller

Free World Dialup.  FWD allows you to talk over the Internet to other FWD users with any broadband connection.  It has the distinction of being one of the earliest VoIP services.  It’s a complete IP communications network that allows you to send and receive instant messages over popular IM networks, to talk with other users using SIP, to call other VoIP networks, to receive calls from the telephone network using special access numbers, and includes other features like voicemail, presence, and caller ID.  http://www.freeworlddialup.com/

Adphone is an advertising supported calling service.  Download the software, put on a headset and dial a number.  They provide 30 minutes a day of free fixed landline calls – supported by the advertising revenue.   http://www.adphone.com/

VoipBuster is a free program that uses the latest technology to bring free and high-quality voice communications to people all over the world. When you use the free VoipBuster software, you can call regular phones in various popular destinations for free or call at an incredible low rate to any other phone on the planet.  You can also call all your online friends (peer-to-peer calls) as long as you like, for free.  http://www.voipbuster.com/en/index.html

Face to face video chat.  ooVoo is an online communication tool and easy way to have a face-to-face video chat with up to 6 friends, family or colleagues, no matter where they are in the world. It can make calls to the US and Canada, send video voicemail and includes numerous video effects.  You can also text chat with up to 6 friends at once. http://www.oovoo.com/

Watch humorous ooVoo videos here

Advertising based phone and TV.  Lycos Phone is a free downloadable SIP soft phone integrated with voice, video, IM, MP3 player, and real-time video streaming, powered by online advertising. Includes voice mail facility to receive voice mails when you are unable to answer a call; receive fax to your e-mail in the PDF format even when you are offline; 'Follow Me Service' facility to get your calls redirected to your landline or mobile phone. http://www.download.com/Lycos-Phone/3000-2349_4-10519170.html

Get the best of the web with YouTring. Free calls, Voice Video and Text chat, SMS, online TV, social networking and online games.  In addition, YouTring brings to its users (Tringers) an exciting 'earn-as-you-surf' plan and Tringers would be awarded free points called Trings (Ŧ). These points can be redeemed by you to purchase any items given in our redemption basket.

http://www.youtring.com/

Turn any computer anywhere in the world into your phone.  The VoiceStick USB Memory Stick enables any telephone or business phone system (PBX) to access our global network and advanced routing technologies to complete most of the call over the Internet, paying only for the last leg of the connection. It turns any computer anywhere in the world into your phone. http://www.voicestick.com/

Start calling all over the world.  VoipWise is a free program that uses the latest technology to bring free and high-quality voice communications to people all over the world. When you use the free VoipWise software, you can call regular phones in various popular destinations for free or call at an incredible low rate to any other phone on the planet. You can also call all your online friends.  http://www.voipwise.com

CounterPath's eyeBeam 1.5 a multimedia communicator designed to enhance the user's communications experience in Voice over IP. Whether you are a consumer or Small Office/Home Office (SOHO) user, eyeBeam allows you to stay connected and manage your calls and availability with a comprehensive suite of carrier-grade Voice, Video, IM and Presence features.  http://www.counterpath.com/eyebeam.html  Or use X-Lite  -- the world’s favorite free softphone.

Vocal instant messaging.  Palringo is a novel Instant Messaging program that runs on a variety of phones and PCs.  Palringo allows you to instantly exchange text, photos and vocal IMs with individuals or groups. http://www.palringo.com

Asynchronous voice chat or “voicing.”  Consumers use near-real-time communication of Say2GO to communicate with their buddies in voice in a way similar to texting.  A text transcript of each talk is seamlessly generated and saved in history of participants´ messengers. Unlike other speech-to-text services, Say2GO doesn´t use human transcribers to preserve maximum confidentiality of Say2GO conversations.  http://www.say2go.com/

Face to face video chatting.  Tokbox is a free service that lets you talk with your friends over live video. You can download a client or talk directly through your browser without a chat client.  http://www.tokbox.com/

Walkie Talkie for the web.   Voice Communication Groups.  Live voice chat for any web page. Any message, anywhere.  Live voice, presence, voice and text messaging. Perfect for keeping teams in touch. http://www.yackpack.com/

dukaBAR provides automated one-click dialing from any Web page. dukaBAR is a handy toolbar/plug-in that automatically scans Web pages and converts all phone numbers into clickable links that initiate phone calls. There is no need to dial again - just click to make a call. http://labs.jaduka.com/dukaBar

See Demo here: http://labs.jaduka.com/swf/dukaBAR_snippet.swf

Communication and instant collaboration.  Instant messenger that can connect to multiple networks (ICQ, Jabber, MSN, Yahoo!).  Includes both voice and video over IP.  http://www.neosmt.com/eng/index.php