| Product | Rating | Most Used By | Product Summary | Starting Price |
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 Rakuten Viber | N/A | Viber, now from Rakuten (acquired 2014) is an instant messaging and cross-platform VoIP software solution designed for personal use and available for both desktops and as a mobile app. It includes features such as video and audio calls, instant message, and unlimited-member group chats. Users can also make paid international calls. | $0.02 Per Minute | |
 Zoiper | N/A | Zoiper is a softphone, SDK and OTT application supplier, supporting the businesses of Service Providers, call centers, VoIP integrators, mobile operators, and businesses requiring immediate VoIP capabilities and compatibility implementation through service-independent softphone applications. Zoiper offers encryption for text, voice and video communications with TLS/SRTP and ZRTP, and runs in a variety of operating systems. The vendor states Zoiper does not rely on Java, Flash or .NET but… | N/A |
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| Considered Both Products |  Rakuten Viber  Samira Islam Resmi Assistant Professor Chose 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 … Chose Rakuten Viber Viber works much faster. Besides, it doesn't require a separate login.  Victoria Loza Graduate Teaching Assistant Chose Rakuten Viber 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 …  Liz Wade Photographer Chose Rakuten Viber 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 …  Rashad Farzalizade Senior Consultant Chose Rakuten Viber 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.  Filip Witkowski Web Developer Chose Rakuten Viber 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 …  Rich Ferris Consultant Chose Rakuten Viber 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.  Agnes Asodi Project Manager Chose Rakuten Viber 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 …  Tony Phan Country Manager Chose Rakuten Viber 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 … | Zoiper |
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| Rakuten Viber | Zoiper | |
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| Small Businesses |  CloudTalk Score 7.2 out of 10 | CloudTalk Score 7.2 out of 10 |
| Medium-sized Companies | CloudTalk Score 7.2 out of 10 | CloudTalk Score 7.2 out of 10 |
| Enterprises |  Cisco Business Edition 7000 (discontinued) Score 9.0 out of 10 | Cisco Business Edition 7000 (discontinued) Score 9.0 out of 10 |
| All Alternatives | View all alternatives | View all alternatives |
| Rakuten Viber | Zoiper | |
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| Likelihood to Recommend | 9.6 (0 ratings) | 5.3 (0 ratings) |
| Usability | - (0 ratings) | 3.9 (0 ratings) |
| Support Rating | 9.4 (0 ratings) | - (0 ratings) |
| Rakuten Viber | Zoiper | |
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Filip Witkowski Web Developer |
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| Pros |
 Tigran Petrosyan Risk Management Specialist |
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Liz Wade Photographer |
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| Usability | No answers on this topic |
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Victoria L. Graduate Teaching Assistant | No answers on this topic |
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Samira Islam Resmi Assistant Professor |
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