Voice Over IP: Most Popular Articles
Tango is a free service that allows you to send free text messages, make free voice calls and make free video calls to your friends via your Wi-Fi, 3G or 4G network, using your PC or iOS and Android mobile device.
How To Make Completely Free Phone Calls To Any Phone Worldwide - Here is a list of things you can do to make calls to any phone, be it mobile or fixed, anywhere in the world for free, without paying a dime, and without being limited by accessibility.
VoIP - Also called Internet Telephony, VoIP (short for voice over IP) uses the Internet and other IP networks to make phone calls. VoIP allows you to make calls locally and internationally for very cheap and often for free. Besides the cost benefits, VoIP also offers a wide range of additional features that spice up your communication experience.
Skype vs. Viber: Which is Better? Comparison Between Skype and Viber Apps for Smartphones
Free SIP Providers - Having a free SIP account is a great way of making free calls on the Internet. You only need to choose a SIP provider that gives you a SIP account for free. There are many of these. Here is my list.
WhatsApp is a free app that allows you to send and receive SMS and MMS messages free to your contacts using your mobile phone. WhatsApp works on Android, iPhone, BlackBerry, Windows Phonoe and Nokia.
Annonymous Phone Numbers - Virtual Phone Numbers - Freaked to give out your real phone number? Here is a list of free and paid services that allow you to make and receive phone calls without giving out your real phone number. These services will give you a fake phone number that you could give here and there and even publish on the net, and never fear spamming again.
How to Get a Free Phone Number? Normally, you get a phone number only when you pay for a phone or VoIP service. The number comes with the service. There are a bunch of services out there that give you a free phone number, often in a package with a lot on interesting features. Here are some ways you can get a free phone number
Viber – Allows Free Calls and Group Messaging Using Your Mobile Number, without needing to register. It is available for Android, iPhone, BlackBerry and Windows Phone.
How much data do I need to count for my voice calls through VoIP while estimating my mobile data usage?
VoIP Pros - Why should you use VoIP? What are its advantages and how does it make voice communication better than regular PSTN phone? Here is a list of advantages and benefits of using Voice over IP.
Instructions on how to install and set up Viber on your Android and iPhone and make optimum use of it.
How to make free voice calls worldwide on FaceTime Audio with the new iOS 7 on your iPhone and iPad. Requirements, setting up and making calls.
How to Make Voice and Video Calls in GMail and Google+ - Just like with Skype, Yahoo! Messenger and many other tools using VoIP technology for communication, Google has its tool for making voice and video chatting. You can use it embedded within your browser while being logged into your GMail or Google+ account.
How To Obtain a SIP Account - SIP is a protocol that gives you a unique identification (a SIP number or address) on the Internet that you can use as a phone number or email address to make and receive voice calls for free to any other SIP user worldwide, or for cheap to any other landline or mobile user. Here is how you can get a SIP account.
3G is a popular wireless network technology used mainly with mobile phones for mobile connectivity. In this article, 3G is defined and presented in both technical and practical ways. 3G has become very popular, especially with multimedia transfer to and from mobile phones and handsets. 3G also allows mobile users to make cheap and free calls using VoIP technology.
Here is a walkthrough of how to connect a Bluetooth headset to a mobile phone. I will be using a Jabra BT2035 as Bluetooth headset and a Samsung Galaxy Ace Android phone for the process. Don’t worry if you have different makes and models of the headset or of the phone, or if you have earlier or cheaper models, the functionalities are more or less the same, and some minor improvisations and inferences will get the job done. What you need is simple a Bluetooth headset and a mobile phone that has Bluetooth support.
IP Addresses - What is an IP address and how does it work? An IP address is a unique address used to locate and identify a device over a network. That device can be an electronic device, a computer, a server, a router or even an IP phone. It is the addressing used for the transmission of data packets over a network working with the IP protocol.
LINE allows free voice calls and free messages over your Android, iPhone, and BlackBerry devices, but also on your Windows and Mac computer. It also offers a lot of other features. it has a huge userbase. Read review.
Tuitalk is a voice service that allows users to make completely free international calls to any phone, not just computer-based softphones, as is the case with most computer-based applications. The calls can however be made only through a computer, and for a limited time of 10 minutes per day. Also, the number of destinations is quite limited, but the most popular countries are listed.
VoIP Cons are an issue, although VoIP has great pros. While VoIP's benefits outnumber its disadvantages, you should be aware of the VoIP pitfalls as a user, so that you have a better VoIP experience.
If you want to install and use Skype on your Android phone or tablet, here is what you need to know. Skype for Android is a must for some and a simple way of saving money on cheap calls for others. Skype for Android offers free video calling with great quality.
SIP allows people around the world to communicate using their computers and mobile devices over the Internet, mostly for free.
Google Voice Review - Google Voice is a phone service that gives you a number to call all your phones. It also gives you voicemail transcription into text, plus many other features. Local incoming and outgoing calls are free, and international calls are very cheap. Here is a review of the service.
What is a data plan? In this article, we define a data plan and see how and who it can help, what does it cost and what are its pre-requisites. We also look at how to best use a data plan so that one can make the most of it without paying too much.
Apps and services that allow you to make free video chat sessions on your computer running either Windows, Mac or Linux.
Installing Skype on Android is notmally easy and straightforward if you have a listed device, but it can be a challenge otherwise. Here are three ways which you can download and install the app.
Thanks to VoIP call-recording tools, you record your phone calls and conversations and save them for later use. While this can be trivial for personal use, it does have great managerial value for businesses.
Free SIP Softphone Apps - Having a SIP account gives you a lot of freedom to communicate through VoIP. Among the benefits is the ability to make and receive free phone calls to other SIP users worldwide, and to be able to use a softphone software of your choice, without being tied to what one VoIP service provider offers. But which are the best free SIP softphone apps and where to get them from? Here is my list
Top 5 Wireless IP Phones - Wireless IP phones are becoming very popular within VoIP networks due to the fact that they allow mobility and scalibility. Here is my top list.
Mean Opinion Score (MOS) - Mean Opinion Score (MOS) gives a numerical indication of the perceived quality of the media received after being transmitted and eventually compressed using codecs. MOS is expressed in one number, from 1 to 5, 1 being the worst and 5 the best.
How To Send Fax over IP - Here are ways you can send and receive fax messages over an IP network and the Internet. IP faxing allows you to send fax messages locally and internationally for cheap and at times for free, and has many other advantages.
Bandwidth determines connection speed. It is one of the most important, and in some cases, the most expensive requirements for using VoIP. There are different types of Internet connections giving VoIP bandwidth; which one should you use?
Apps that you can install on your iPhone, iPad, Android, BlackBerry, Windows Phone and Nokia device to send and receive free text SMS messages.
Here are ways in which you can monitor your 3G and Wi-Fi data usage on your iPhone, iPad and iPod. There are apps that you can download from the Apple App Store or use simpler ways. This finally allows you to better use your data plan and avoid costs above what you expected.
What is Skype? With more than 340 million registered users, Skype is the most popular voice communication service in the world. Skype can be used on a computer to communicate (call) with a person locally or abroad for free.
Phonebooth Free Review - Phonebooth Free service offers a free phone number for your area that you channel incoming calls to different phones, fixed and mobile. It poses as a serious alternative to Google Voice, and also offers a paid upgrade for outgoing calls. The Phonebooth Free service is offered by Bandwidth.com, which is a major player on the VoIP market. The features offered for free is comparable to Google Voice and its paid rates are around the market’s average.
The difference between circuit switching and packet switching to show why packet switching makes VoIP better.
Voice quality in VoIP is affected bandwidth, your equipment, the location of your hardware, weather conditions and compression algorithms.
What is a DECT phone? DECT stands for Digital Enhanced Cordless Technology. In simple words, a DECT phone is a cordless phone that works with your landline phone line. It is the type of phone set that allows you to roam in the house or in the office while you talk. While a DECT phone is technically a mobile phone, we don’t use this term for it, as the nature of a mobile phone and a DECT phone are basically quite different.
IP Protocol - What is the Internet Protocol (IP) and how it works. This article talks about the protocol, IP routing, voice and IP, the TCP/IP protocol suite, IP packets and IP addresses.
Free Skype Mobile Calls - Here are ways in which you can make completely free calls on your mobile phone using Skype, to call people locally or internationally. Skype is not that much enhanced for mobile calling, but its popularity requires it to be mobile for so many people.
VoIP for the iPhone - VoIP Services And Applications for the iPhone - Here are ways for iPhone users to make free or cheap phones calls to any place around the world using their iPhones. The listed VoIP applications and services are compatible with and specifically designed for the iPhone.
How to Make HD Skype Video Calls
There are three ways in which you can make a VoIP connection: Computer to computer, phone to phone and computer to phone or vice-versa. Let's see these in more details.
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You want to be able to send and received free text messages and sms on your android, iphone, blackberry, windows phone or nokia smartphone? Here is what you need.
Getting Started With VoIP - Once you are aware of the benefits VoIP can bring to your communication experience, you are very likely to decide to get started with VoIP, or at least give it a try. So what next? In this piece of content, we see the different things you need to have and do to get started with VoIP
VoIP Call Recording - Here is a list of some of the most common software tools you can use to record your VoIP calls for your individual use.
VoIP Service Providers - Most households and small businesses wanting to replace their existing phone lines with VoIP choose among the residential subscription-based service providers. Here is a list of the top service providers of this type.
How to make free phone calls to any landline and mobile number in the US and Canada? Here are some tools and services you can use.
How to Obtain a Phone Number that Rings Multiple Phones - Here is a list of services that give you a phone number that rings multiple phones on incoming calls.
Here is a list of the most common codecs used in VoIP for voice encoding and compression, with comments.
Apps for Windows Phone that allow you to make video calls on your mobile device.
What is OTT? Also known as over-the-top service, OTT is making many happy consumers, especially in the field of Internet TV and telecommunications. VoIP and video conferencing and services that people use above the network of service providers, without the latter being in control or deriving any benefit from it.
LTE Glossary - What is LTE? LTE stands for Long Term Evolution and is a new 4G wireless broadband standard. LTE is still in its early days, but the advantages it proposes over existing wireless mobile standards like 3G, WiMAX and GSM making an interesting enhancement if not replacement for these.
KakaoTalk is a VoIP service with more than 50 million users that allows you to make free calls and participate in free SMS group messaging with any user in the world using the same app.
Making a Conference Call With Google Voice
ooma Review - Ooma is a VOiP service that allows completely free calls to all users, landline and mobile, to the US and Canada, and very cheap international calls. ooma rids you of monthly bills. You just have to buy the device once off and you never pay after that for making calls.
A data packet is a basic unit of communication over a digital network. A packet is also called a datagram, a segment, a block, a cell or a frame, depending on the protocol. When data has to be transmitted, it is broken down into similar structures of data, which are reassembled to the original data chunk once they reach their destination.
Using VoIP (Voice over Internet Protocol) on your iPad can save you money and spare you from using your expensive GSM minutes.
How Much Bandwidth is Required for Skype HD Video Call?
VoIP vs. IP Telephony - Most people use the terms ‘Voice over IP’ (VoIP) and ‘IP Telephony’ interchangeably, equating one to the other. What’s the difference between the two, if there is any?
What is Ethernet? Ethernet is the protocol that controls data transmission over a Local Area Network. It is by far the most popular and most commonly used protocol for LANs.
Gizmo allows you to make free calls to landline and mobiles phones to 60 countries, and offers free voicemail service. It presents itself as a serious competitor to Skype.
Is Skype a VoIP Service or VoIP App? Before answering this question, let us see what both VoIP Service and VoIP App mean.
Here are ways you can save a lot of money by cutting down your communication costs with VoIP. This article shows you ways to make free or very cheap local and international phone calls with IP telephony.
Here is a list of apps that allow you to use SIP on Android. They are clients that can be downloaded and installed from Google Play and configured with any free SIP service, for free VoIP calls.
iNum - iNum is a service that provides a global phone number that can be used to ring on your phone anywhere you are in the world. In other words, it transcends boundaries and distances, thereby eliminating the worries of area codes and expensive rates.
VoIP on BlackBerry - VoIP allows you to power up your BlackBerry device to make cheap or free calls, both local and international. Plus it gives you lots of features that you wouldn't get with your cellular provider.
VoIP Service - Before choosing a VoIP service, you have to decide which type suits you best. Choosing the right VoIP service allows you to derive the maximum benefits. The type of VoIP service you choose will depend on how you will communicate - at home, in the office, with your mobile or on your computer.
Turn Your iPad into a Phone - Power your iPad with VoIP and use it as a phone to make and receive free and cheap voice calls.
WiFi is also referred to as WLAN, which stands for wireless LAN, and 802.11, which is the technical code for the protocol. Learn more here.
video conferencing - Video calls and video conferencing considerably enhance your communication experience. Video conferencing is now affordable for everyone, with very little investment on hardware. It requires only a webcam and headset. Many applications and services are free.
Alternatives to Viber - IM and VoIP Apps for Smartphones
Fongo review - VoIP service for Canadians
MagicJack is a small device that allows you to make unlimited free calls, without paying monthly bills. You can just plug it to your computer on one side and your regular home phone on the other side and start making and receiving phone calls.
OpenTok was formerly TokBox. It allows you to build Your Own Free Video Chat App and Host Video Conferencing Sessions of Up to 1000 Participants on Your Web Site.
Using VoIP on the Samsung Galaxy Tab to make free calls or cheap calls. A list of VoIP applications and services that support the Samsung Galaxy Tab.
VoIP Software - Software-based VoIP providers often provide softphones, which are applications software that act as a phone on your computer, along with their service. Skype is an example. Here is a list of the common softphones and services, with lots of alternative to Skype
SIP is used to make calls over the Internet and other IP networks. A SIP address is a unique identifier for each user on the network, just like a phone number identifies each user on the global phone network, or an email address. It is also known as a SIP URI or a SIP profile
VoIP Hardware Equipment - Here is a list of the most common hardware equipment you will use for VoIP: Phone Adapters (ATA), Routers, IP Phones, Headsets and Handsets.
VoIP on Android - Android is an operating system specially adapted for mobile phones and handsets launched by Google. If you are using a phone running Android, like the Nexus One, the HTC Hero, the Samsung Galaxy, to name but a few, you can take advantage of the power of VoIP to make free or cheap calls on your mobile. Here are the services and applications you can choose from.
Softphone is software that allows you to make phone calls using a computer. It is a term used in contrast with hardware-based phone calling where dedicated hardware is used for making calls.
What is Nimbuzz? Nimbuzz is a web messenger app based on VoIP that allows users to make free voice calls and chat, and cheap voice calls to any destination worldwide. It also has other features, but no support for video so far.
Why should you use VoIP? What are its advantages and how does it make voice communication better than regular PSTN phone? Here is a list of advantages and benefits of using Voice over IP. Page 2.
Top 5 VoIP Wireless Routers - VoIP wireless routers are used for linking wireless LANs to the Internet. They are also called gateways, and they enclose a lot of functionalities. Once you have it working, you can connect any wireless device like IP Phones or even computers to it through Wi-Fi connections. The routers in this list have been chose based on their popularity, performance, ease of use, features and scalability.
Gmail Calling Review – Google now offers the possibility of making and receiving international calls for cheap and free. Standing as a competitor for Skype by offering similar services, Google Calling allows people to make free PC-to-PC calls and cheap calls (as low as 2 cents per minute for some destinations) to and from mobile and landline phones. 2 cents per minute is not the cheapest on the market, but is among the cheapest, and it definitely cheaper than Skype.
VoIP for Mobile Phones - If you intend to considerably cut down the cost of your mobile calls, here is a list of VoIP services that can allow you to save up to 95% on mobile communication. Part of some services are even free.
Viber's new udpated to version 4.0 comes with new features likes calling to landline and mobiles not using Viber, more stickers, push to talk, improved performance etc.
PBX - A PBX (Private Branch Exchange) is a switch station for telephone systems. It consists mainly of several branches of telephone systems and it switches connections to and from them, thereby linking phone lines. The main technical roles of a PBX are: To switch between telephone users thereby creating connections; To make sure the connection remains in place properly by keeping its resources; To record the quantities, statistics and metering related to the calls
Phone Number Portability With VoIP - Will My VoIP Service Provider Allow Me to Keep my Existing Phone Number? Yes, and in some cases, No. It depends on the company.
Top 4 Phone Adapters (ATAs) - An ATA (Analog Telephone Adapter) is a device which makes the link between a PSTN phone line and your VoIP network. You should have one if you don't want to buy expensive IP phones. ATAs are connected to the ADSL router on one side and to your phone on the other. Here is my top list of ATAs.
ooVoo review - VoIP and video conferencing app that allows free video calls with up to 12 participants per session. Video quality is good. Many features - including openness to other networks like Facebook, Twitter and other IM. ooVoo is also mobile, with apps for the iPhone, iPad and more than 400 Android devices.
Skype for the iPad and iPhone - How to install and use Skype on the iPad and the iPhone. A step by step guide.
You can make calls on VoIP through your mobile phone, allowing you to cut down on your mobile communication costs.
ooma - ooma allows you to make free unlimited free nationwide calls for free. ooma is one of the no-monthly bill companies, with which you only buy a device once and use it to make free phone calls ever after. Read more on the ooma device and the ooma service here.
How To Configure a SIP Softphone App - You can use a SIP-based VoIP softphone app to make and receive voice calls without being tied to one specific service provider. For that, you just need a SIP account and the softphone app installed on your computer. Here is how you can configure the whole to get going with the VoIP calls. The steps will be quite general, X-Lite taken as example.
Hotspot - A hotspot is a small area that gives wireless Internet access through WiFi. WiFi (also written Wi-Fi) is a wireless technology that allows LANs to be set up without wires between devices. So to have a hotspot, you only need to have a wireless router connected to a broadband Internet line. The router will generate the WiFi signals in a sphere and any WiFi-enabled computer or device in that sphere, which is finally the region of the hotspot, can connect while being inside it.
Even though broadband is recommended for high quality voice, a simple dial-up connection of around 64 kbps will work for voice calls.
Gmail Voice and Video Chat Plug-in for Voice and Video Chat in Your Browser
The Session Initiation Protocol is complementary with VoIP since it provides signaling functions to it. Apart from VoIP, it is used in other multimedia technologies as well, like online games, video and other services. SIP provides the necessary signaling for creating, modifying and terminating sessions with one or more communicating participants.
UMA stands for Unlicensed Mobile Access. It is a wireless technology that allows seamless transition between wireless WANS (e.g. GSM, 3G, EDGE, GPRS, etc.) and wireless LAN (e.g. Wi-Fi, Bluetooth). This means that a user can initiate a call over GSM, for example, and the calls switches from the GSM network to the office’s Wi-Fi network once the user walks into range. And vice-versa.
What is PBX? PBX stands for Private Branch Exchange. It is a PSTN telephone network used within a private enterprise. Users inside a PBX share outside lines which they use to make phone calls external to the PBX. A PBX specifically made for VoIP is called an IP-PBX. Asterisk is a good open-source PBX software.
How Google Voice Works? Is it a VoIP service like Skype? Google Voice is not a VoIP application or service, but leverages on VoIP technology to make calls cheap. It also aims at unifying communications.
You can use your 3G mobile phone to make free or very cheap phone calls to any destination worldwide using VoIP applications and services.
Viber for Windows and Mac - desktop and laptop computer
VoIP Phone Number Portability - One of the main questions you have to ask yourself before deciding whether to port your number or not is whether the number is actually portable.
VoxOx is an application that allows you to do voice calling, video conferencing, emailing, instant messaging, texting, social networking and faxing in one same application. It also acts as a VoIP softphone.
Security Issues in VoIP. While VoIP has become one of the mainstream communication technologies, VoIP users face a series of security threats. Let us see these security issues.
Fring is a VoIP application and service that allows free mobile phone calls, chat and instant messaging. It is a softphone that can be directly installed on a smart phone and works on 3G, GPRS or Wi-Fi network.
VoIP Call Recording - Here is a list of some of the most common tools your organization can use for VoIP call recording. These tools are mainly for those companies that use an IP PBX, and most of them do more than recording VoIP phone calls.
What is an ATA? Learn about Analog Telephone Adapters and their functions and features, and how they are used to make VoIP connections.
QoS and VoIP - Quality of Service is an important issue in VoIP service provision. QoS is the differentiation between different types of traffic and classes of service such that one is favored over the other in terms of bandwidth utilization. In VoIP, QoS considerations favor voice traffic.
VoIP offers an abundant amount of interesting, useful and enhanced features, many of which come free with service packages from VoIP service providers. Which feature you want to include in your VoIP service package will depend on your communication needs. Here is a list of VoIP features you can get with your service provider.
Unified Communications - Unified communications (UC) is a new technological architecture whereby communication tools are integrated so that both businesses and individuals can manage all their communications in one entity instead of separately. In short, unified communications bridges the gap between VoIP and other computer related communication technologies.
Learn how to send fax messages over IP networks and over a VoIP line. That allows you to save money on faxing, and benefit from other features. IP Faxing, also called Faxing over IP or FoIP, can allow you to send fax messages for very cheap and even for free, both locally and internationally.
Truphone review - Truphone is a mobile VoIP service that, through a free application that is installed on a mobile phone, allows users to make free or cheap local and international calls from their mobile phones. The main target users of Truphone are iPhone and BlackBerry users, while it also aims at those using high-end business phones or smart phones.
Audio conferences carry a certain nunmber of problems that have to be dealt with in order to have effective conferences. Here is a list of those and how to remedy them.
WeChat Review - Mobile Communication App Loaded With Features - high quality free voice and video calls, free emoticons, group chatting, social networking etc.
The top VoIP apps for making free and cheap voice and video calls on iOS 7 - year 2013.
What is latency and how can it affect voice quality in VoIP? Latency is the time between the moment a voice packet is transmitted and the moment it reaches its destination. It of course leads to delay and finally to echo. It is caused by slow network links. This is what leads to echo. [T]
Wireless VoIP is the deployment of VoIP over a wireless LAN, using the Wi-Fi technology. It has got the great advantage of mobility, but suffers form someo shortcomings as well.
Qik is a video app for mobile phones that allows video calls, video streaming, video mail and storage plus many other features.
Visual Voicemail - Visual Voicemail explained. With visual voicemail, you have a list of the voicemail messages displayed on your phone’s screen or that of your computer. You also have a menu with several options, just like for email. The options allow you to navigate, arrange, manage, listen, re-listen, delete, call back, send back a message etc
A router is a device in computer networking that forwards data packets to their destinations, based on their addresses. A router can also be said to do switching, but a router is different from a switch. The latter is simply a device to connect machines to form a LAN.
Device Based VoIP services are good for people who don't want to get bothered with monthly bills. You buy a piece of hardware and you make free calls ever after.
Organizing a group-calling session with Skype is very easy if you follow these steps.
Use Groove IP to make your Android device a free communication center. Use Google Voice and GMail calling to make and receive free calls on your Android device using Grove IP, over a Wi-Fi connection.
How To Receive Phone Calls on GMail - To be able to receive phone calls within GMail, you need to have a Google Voice account. Such a thing is offered free by Google, but so far, not all countries are covered. So many of you might need to wait a while before being able to benefit from Google Voice
Here, we try to figure out whether your bandwidth is sufficient for your VoIP needs, and how you can know whether it is so. Bandwidth, or connection speed, is one of the main factors affecting VoIP call quality.
While BYOD is much appreciated by most, it comes with many drawbacks and has to be dealt with with particular caution. In this article, we look at how people in businesses are welcoming the idea, its pros and its cons.
Data calculators are here to help you estimate how much data you need for your mobile and broadband data plan.
Software Based VoIP Services allow users to make free calls to other people using the same service on their computers to any destination in the world. The calls are make through an application called a softphone installed on a computer or portable device. Read more here on this kind of VoIP service.
Voxofon is one of the many phone services that offer the possibility of making international calls using mobile phones for very cheap, compared to the high rates of pure GSM and other traditional services. Calls are initiated using GSM network and the rest is handed over to VoIP.
How to Record a Call with Google Voice? I use Google Voice and I want to record some of my calls. How do I proceed?
Online Connection Speed Tests - Bandwidth meters give you an idea of how suitable your connection is for a certain task online, e.g. voice over IP. Let us see how they work, whether they are accurate, how to interpret their results, what factors affect these, and which speed tests to use.
IP Routing - Routing is the process during which data packets are forwarded from one machine or device (technically referred to as a node) to another on a network until they reach their destinations.
Viber on BlackBerry - Downloading, installing and setting up viber on BlackBerry devices
Skype Premium is an enhanced version of the free VoIP service that removes some of the restrictions. It allows unlimited free calls to other phones in a country of your choice, multi-party video conferencing and some other features.
You can use Skype as your home phone, or as a side service, in case your monthly bill from your traditional phone service becomes alarming. Skype's monthly subscription for local phones is interesting enough to try.
Which numbers to dial when making overseas calls? Let's try to understand what's in a phone number and what to do to correctly call abroad.
Vtok – Google Video Chat on Android and iOS - App Review
How to Stop Producing Echo. My correspondent says I produce echo. What can I do?
Facebook Messenger for the iPhone and Android. Free calls to other facebook users. SMS and photo sharing.
Samsung ChatON – IM App Review - Instant Messaging App for Smartphones
Device-Based VoIP - Here is a comparison between ooma, Phonegnome and MagicJack, the three main device-based VoIP services, those that rid you of monthly bills.
Nymgo Review - Nymgo is a good VoIP service whose main strength is its low price. Nymgo charges some of the cheapest rates on the market, much cheaper than Skype. Some destinations are charged at less than half a cent per minute. Nymgo offers good quality calls with a simple application and web interface, and your remaining credit is always shown. You require a computer and a handset to make calls, but can also install the application and make calls over SIP-supporting mobile phones.
EyeBeam is a full-fledged SIP-based softphone VoIP app that allows you to have a sophisticated voice and video communication experience whether you are an individual user or part of a business. It is more of a multimedia communicator than a simple VoIP app. EyeBeam is not attached to any VoIP service, meaning that you need to have a service to tie to it. This also means that you are free to use any VoIP service that supports SIP. It is a great tool for advanced users and VoIP administrators.
BlueStacks is a program that emulates Android on your Windows or Mac computer. This allows you to install and run some of the million+ apps present on Google Play, from Angry Birds to WhatsApp to Viber to Skype and other interesting apps. BlueStacks works in Windows and Mac operating systems.