Video: Google Voice vs Skype

Google Voice is an alternative telecommunications service. The service is configured and maintained by the user in a web-based application, styled after Google's e-mail service, Gmail. Google Voice currently provides free PC-to-PC voice and video calling worldwide between users of the Google Voice and Video Chat browser plugin
Skype is a software application that allows users to make voice and video calls and chats over the Internet. Calls to other users within the Skype service are free, while calls to both traditional landline telephones and mobile phones can be made for a fee using a debit-based user account system. Skype has also become popular for its additional features which include instant messaging, file transfer, and videoconferencing. Skype alternative for enterprise is called Skype for Business. Secure Skype alternatives are Signal and Telegram.
Face to face in the news:

2018 - Google Voice version for enterprise comes to G Suite

Google is starting to roll out an enterprise version of its Google Voice service for G Suite users. Google voice has been a long-enjoyed service for everyday consumers, and offers a lot of benefits beyond just having a normal phone number. The enterprise version of Google Voice appears to give companies a way to offer those kinds of tools, including AI-powered parts of it like voicemail transcription, that employees may be already using and potentially skirting the guidelines of a company. Administrators can provision and port phone numbers, get detailed reports and set up call routing functionality. They can also deploy phone numbers to departments or employees, giving them a sort of universal number that isn’t tied to a device — and making it easier to get in touch with someone where necessary. There’s also a spam filtering feature, which will probably be useful in handling waves of robo-calls for various purposes.

2010 - GMail = Unified Communications client. Skype should better react

Gmail Phone

Few days ago the analytical company Frost & Sullivan stated that Google will soon storm the unified communications market, which is dominated by Cisco, Avaya and Microsoft. After all, Google has GMail, Google Voice, GTalk, Buzz, Gizmo5, Android, GISP and it remains just to combine all these technologies into single offering. And Google has decided to immediately confirm this forecast - from today GMail allows you to make and receive phone calls (thanks to the integration with Google Voice and Gizmo5). Meanwhile the VoIP service in GMail is available only in US.

To turn your GMail inbox into the web phone, you need to install the browser plugin - the same that is used for voice and video chat in GMail. To make a call you need to open the numpad and dial a number. The rates are not revolutionary - the same as in Gizmo5. The same applies to the call quality. Payment are taken from the Google Voice account.

Google Talk GMail

Then you can redirect your Google Voice number to your email address in GMail. When somebody calls - the popup window appears in GMail and you can answer the call, ignore or screen it. Last year Google also enabled sending voicemail and SMS from Google Voice to GMail inbox.

With the appearance of the VoIP feature in GMail most experts again started predicting that Google will kill Skype. However, the same forecasts we heard when the videochat in GMail launched - but nothing had happened. So, history will tell, if the combination of email and telephony is so good. Earlier Skype's CEO, Jonathan Christensen told that "without chat, status and video Skype's VoIP wouldn't cost anything." May be, adding mail and global contacts to this mix will become the new killer-feature.