The call quality is clear, as if you are using a phone to make the call. You can even add contacts to your Vox.io account manually, via a contact file saved in your PC or through Google Contacts. If you like the service, you can even invite your friends to try out this useful application. The service is still in beta stages so you might experience difficulties while calling.

It’s free to call other Vox.io users but if you want to make any international calls, you must buy Vox.io credit. You can check out Vox.io call rates here.

Features

• Simple and easy to use.
• Call friends through browser.
• Upload contacts from your PC.
• Free calls with other Vox.io users.
• Buy credit and make cheap calls.
• Free calls to other Vox.io users.
• Link Google, Twitter or Facebook account with Vox.

Check out Vox.io @ http://vox.io

FaceFlow is a web service that lets you video chat with up to four people for free. A full screen mode lets you expand the friend’s feed to the entire screen. Audio and text chatting are also supported. In addition to letting you video chat with other FaceFlow users, the site lets you broadcast a live feed from your webcam and obtain its public URL. You can also randomly video chat with somebody from the FaceFlow network.

The site also provides number of free single player and multiplayer flash games. You can play against strangers you meet or simply against your friends.

Demo video:

Features:

• A user-friendly web service.
• Lets you video chat with up to four people.
• Lets you randomly chat with other people from the FaceFlow network.
• Lets you broadcast a live feed from your webcam.
• Lets you  video chat for free with up to 4 people.
• Supports single player and multiplayer flash games.

Check out FaceFlow @ www.faceflow.com (by MOin from ThumbPress)

CallByText is a simple but brilliant web service that helps you place calls in a unique way. You start by registering for an account on the website and specifying your phone number, Skype username, and password. With your account set up, you can text the recipient’s phone number to CallByText; it then initiates a Skype conference call between your phone and the number you called to. You are connected to the service over your carrier hence no Internet is required. Regular Skype charges are applied to your account without CallByText charging anything extra.

Although CallByText has a dedicated application for iPhone, the service can be used by any type of phone since it requires only the ability to send text messages and receive calls.

Demo video:

Features:

• A user friendly web service.
• Lets you place calls through Skype by texting the numbers.
• Does not require internet.
• Can be taken advantage of by any phone that supports text messaging.
• Has a dedicated application for iPhone.
• Similar tool: Ring2Skype.

Check out CallByText @ www.callbytext.com (by MOin from ThumbPress)

As you can see in the above screenshots, the tool has a neat user interface. I didn’t get a chance to try it, but if it works, it’d be a pretty good deal for iPhone users, provided their service provider doesn’t charge exorbitant 3G rates.

Features

• iPhone app to make free calls
• Calls can be made over 3G or Wi-Fi
• No other charges except for data charges
• Call anyone with a phone number (and who has Viber) for free

Check out Viber @ www.viber.com (By Abhijeet from Guiding Tech)

Making a phone call with Poke Talk is easy. Just register for an account and enter your telephone number as well as the number that you are calling. Poke Talk will automatically connect your number to your recipient. You can then use your landline or cell-phone to make free calls.

This crafty app even allows you to send SMS messages, create web callbacks, schedule, track, and analyze calls, and more. PokeTalk provides coverage for more than 55 countries.

PokeTalk offers accounts where you get 5 free calls to free destinations. You can also pay to credit your account if you want to call more destinations and get rid of adverts. Rates vary by country and the type of service that you want to use (check their rate calculator)

Features:

• Make calls to more than 55 countries around the world.
• Option to call from your landline or mobile phone.
• Free calls available to bonus destinations.
• Other services include call tracking, web callbacks, schedule calls, SMS, support for roaming SIM and more.
• Similar Tools include Flaphone, Cheapest-VoIP, Fring, and EvaPhone.

Check out PokeTalk @ http://www.poketalk.com

After signing up for a free account, you can start adding contacts to start and receive web calls. The contact list manager allows you to add friends for quick calls and IMs. Moreover, this slick tool lets you save and view your call history.

Flaphone uses Session Initiation Protocol (SIP) to call other Flaphone users, SIP phones, and any phone numbers using SIP provider accounts. Additionally, you can install Flaphone to your desktop with Adobe AIR. A version for Google Chrome OS will also be available in the future.

Features:

• Free browser based softphone that allows you to contact other Flaphoneâ„¢ users, SIP phones, and landline and mobile numbers using an SIP provider.
• Processes incoming calls.
• No NAT and firewall problems.
• View your call history.
• Can be installed as a desktop application.
• Allows video calls and instant messaging with other users.
• CallMe widget that can be embedded on websites.
• Similar tools: FlashPhone.

Check out Flaphone @ www.flaphone.com

You can create multiple permatimes and share them with others without registration.

Features:

• Announce an event in your local time and share it with participants across different timezones.
• Share the event with others by forwarding the URL.
• Everyone from a different timezone will see the event’s time/date in their local time.
• Browse future and past permatimes.
• No registration and free.
• Similar tool: EasyTZ.

Check out PermaTime @ www.permatime.com

The service, as they claim, is supported by a reliable system specially developed for providing users a consistent and efficient communication service.

Features:

• Receive calls on Skype from the landline phone for free.
• Sign up, get an online phone number and a private extension and answer calls from your Skype.
• Provides numbers in more than 40 countries.
• Supported by a reliable communication system.

Check out Ring2Skype @ www.ring2skype.com (by Abhijeet from Jeet Blog)

After the fax been sent MyFax sends sender an email message stating whether the fax was successfully delievered or failed. When the fax delivery is failed MyFax attempts to resend the fax up to three more times.

Features:

• Send free fax by internet to 41 countries including US, Canada, most of Europe, China, Japan, and South Korea.
• Send 2 free faxes per day, each up to 9 pages long.
• There is a 10 MB file size limit per fax.
• Supports 178 file formats.
• No sign up needed.

Other sites to send free fax via internet are GotFreeFax, TPC, FaxZero and eFaxFree.

Check out MyFax @ www.myfax.com/free

All that user has to do is quickly install browser client and then assign a hot key which he presses whenever he wants to speak. (the hot key works regardless of which application is open).

The application allows 200 people per chat room and there is no limit on the number of chat rooms created (each room can be assigned separate hot key).

Features:

• Free online group voice chat for gamers and groups.
• Allows 200 people per chat room.
• No limit on the number of rooms.
• Invite others by forwarding a URL, (URL can also be customized).
• Requires quick installation of browser add-on.
• Voxli works on IE and Firefox (both Mac and Windows) support for other browsers is on the way.
• No registration and free for all group sizes during open beta.

Check out Voxli @ www.voxli.com (via TechCrunch)