Rakuten Viber

End-to-end encryption scrambles my messages and delivers them as a scrambled code to my friend's device, whether mobile or desktop, so that only their device can decode them into plain text. If my friend's phone is turned off or they don't have access to the internet, my message will be stored on Viber's servers (for a limited time) until their device is ready to receive it. Because Viber can't access or read my private conversations in the first place, Viber can't sell them.

Rakuten Viber is overall the best. Hands down!!! Even though the other products have their own use and they are well functioning in the market, but Rakuten Viber is still top notch!

It's faster than all of above, better for cross platform communication and unlike the above examples (Skype for Business and Slack), not directly tied to organization. Its other alternative (not listed on TrustRadius) is WhatsApp, which, in my opinion is a copy of Viber. Viber was first, and whatever new feature Viber introduces, I see in WhatsApp after a few days/weeks.

Viber works much faster. Besides, it doesn't require a separate login.

I do not know about other products like Viber. Viber works fine on your cell phone and you can also install it on your laptop or desktop. In general I use Viber on my mobile.

Viber comes close to WhatsApp with its similar features, that said, I still prefer WhatsApp as more friends and coworkers use it. I prefer to use Slack for my other profession as a remote English teacher as it allows me to get notifications in a format that avoid annoying "chain messages".

Skype's user interface is really glitchy and doesn't provide same functionality in terms of fun elements - emojis or gifs. Slack is excellent communication tool but as well doesn't provide fun elements as Viber does(emojis, memes, gifs and more). I should also mention that quoting in Slack is not really easy and intuitive.

We started using Viber many years ago. The WhatsApp application was good to connect with people via text messages but it did not have the calling feature. Free calls could be made using Viber. Hence, it was used as a mode of communication within our group.
Viber could also be projected on the desktop, like Whatsapp web. It helped us more in communicating while working on the computer.

Viber is really bad compared to Slack. It is not designed for business at all.

I have compared Viber to Skype in the past, and there are two main differences I see. First, with Skype, you are not limited to calling only other Skype users (this limitation exists with Viber). Second, Skype's call quality almost always wins, which I believe is thanks to Skype using HD voice. However, I believe Viber is the clear winner in mobility. Skype seems more intended for use on the computer, whereas Viber is dedicated to my phone.

Before Viber, we were using Slack. Our colleagues were using Slack only at work. But Viber is used for personal needs too. That is why we switched to Viber because we can reach to our colleagues anytime and from anywhere.

Better pricing than Skype. Skype has a better platform. Skype really excels in terms of video conferencing capability, the quality of image and the platform is clearly better than Viber. Viber and Skype have been in the market for a while, yet no one relies on Viber for video conferencing. When you need to have HR interviews, for example, you would like to send someone an invite without the need for an install, I don't know that Viber has that. Obviously in terms of usability, there is always a pull effect as in any organization, we use/like this function a lot hence we chose this product as an overall solution.

Viber lacks the business capacity that Skype for Business has and it is honestly hard for me to see Viber as a competitor to Microsoft. We are talking about premium support and integration in a vital part of the organization across dozens of countries. I am not saying that Viber can't do it, but rather that Microsoft has acquired such an experience providing end to end business solution with a great reputation. One would not want to take risks with aspiring challengers, otherwise might as well use Messenger or Whatsapp. There has to be a Business approach, that is why having Skype and Skype for Business as a separate product for business needs is important for our day to day activities. Protecting the network and enhancing interconnectivity isn't something you will find Viber.

We evaluated Whatsapp and Line as 2 other tools alongside with Viber and finally decided to go ahead with Viber since we found Viber's call quality especially on international calls to be really clear and much better without any disconnections or static when we compared it with the other ones that were available. Also, the call drop was virtually not existent in Viber and this was one of the main reasons for going ahead with Viber despite its lack of popularity.

I use What’s App a lot but mainly for video chat and text. They don’t have a features like Viber Out that I’m aware of.

Skype has UI problems and makes the fun elements such as emojis and gifs hard to use. Slack is a good communication tool but has again less fun elements and is more work-oriented so it doesn't contribute a lot to a fun working atmosphere. Whatsapp was never even in the game because the desktop app is hard to download and run.

Skype offers similar communication features as Viber, but Viber is more convenient as it uses the phone number as contact details. So instead of having to remember the user id, you just need to add your business partner's contact number and you have their viber already. Al, o the Skype app on mobile is too slow and a hassle to use if you are on the go.

While comparing these two applications with the Viber, I would say, the main advantage of the Viber is that it is very widely used in my region unlike other two. Otherwise, the functionality and other stuff are pretty much the same, while I slightly go for the Viber's voice calling quality as it really stands out, in my opinion.