Kamailio SIP Server vs. Rakuten Viber

Overview
ProductRatingMost Used ByProduct SummaryStarting Price
Kamailio SIP Server
Score 9.0 out of 10
N/A
The Kamailio SIP Server, formerly known as OpenSER or SER, is an open source VoIP and communications platform.N/A
Rakuten Viber
Score 7.8 out of 10
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
Pricing
Kamailio SIP ServerRakuten Viber
Editions & Modules
No answers on this topic
USA
$0.019
Per Minute
UK
$0.019
Per Minute
Offerings
Pricing Offerings
Kamailio SIP ServerRakuten Viber
Free Trial
NoNo
Free/Freemium Version
NoNo
Premium Consulting/Integration Services
NoNo
Entry-level Setup FeeNo setup feeNo setup fee
Additional Details
More Pricing Information
Community Pulse
Kamailio SIP ServerRakuten Viber
Top Pros

No answers on this topic

Top Cons

No answers on this topic

Features
Kamailio SIP ServerRakuten Viber
Cloud PBX
Comparison of Cloud PBX features of Product A and Product B
Kamailio SIP Server
8.0
1 Ratings
2% below category average
Rakuten Viber
9.5
13 Ratings
15% above category average
Hosted PBX8.01 Ratings9.56 Ratings
Multi-level Interactive Voice Response (IVR)9.01 Ratings9.78 Ratings
User templates7.01 Ratings8.87 Ratings
Call reports8.01 Ratings9.89 Ratings
Directory of employee names8.01 Ratings9.78 Ratings
Call Management
Comparison of Call Management features of Product A and Product B
Kamailio SIP Server
8.4
1 Ratings
0% below category average
Rakuten Viber
9.3
15 Ratings
10% above category average
Answering rules9.01 Ratings9.59 Ratings
Call recording8.01 Ratings9.79 Ratings
Call park9.01 Ratings8.84 Ratings
Call screening8.01 Ratings8.89 Ratings
Message alerts8.01 Ratings9.814 Ratings
VoIP system collaboration
Comparison of VoIP system collaboration features of Product A and Product B
Kamailio SIP Server
7.5
1 Ratings
10% below category average
Rakuten Viber
9.5
13 Ratings
14% above category average
Video conferencing7.01 Ratings9.513 Ratings
Audio conferencing8.01 Ratings9.713 Ratings
Video screen sharing7.01 Ratings9.05 Ratings
Instant messaging8.01 Ratings10.09 Ratings
Mobile apps
Comparison of Mobile apps features of Product A and Product B
Kamailio SIP Server
-
Ratings
Rakuten Viber
10.0
18 Ratings
18% above category average
Mobile app for iOS00 Ratings10.017 Ratings
Mobile app for Android00 Ratings10.017 Ratings
Best Alternatives
Kamailio SIP ServerRakuten Viber
Small Businesses
CloudTalk
CloudTalk
Score 9.5 out of 10
CloudTalk
CloudTalk
Score 9.5 out of 10
Medium-sized Companies
CloudTalk
CloudTalk
Score 9.5 out of 10
CloudTalk
CloudTalk
Score 9.5 out of 10
Enterprises
Cisco Business Edition 7000 (discontinued)
Cisco Business Edition 7000 (discontinued)
Score 9.0 out of 10
Cisco Business Edition 7000 (discontinued)
Cisco Business Edition 7000 (discontinued)
Score 9.0 out of 10
All AlternativesView all alternativesView all alternatives
User Ratings
Kamailio SIP ServerRakuten Viber
Likelihood to Recommend
9.0
(1 ratings)
9.6
(18 ratings)
Support Rating
-
(0 ratings)
9.4
(7 ratings)
User Testimonials
Kamailio SIP ServerRakuten Viber
Likelihood to Recommend
Open Source
Kamailio SIP Server is very well suited if you want to secure your main servers; it can perfectly act as a proxy server and a gateway to your main server. It also does load balancing and call transfers easily based on the configurations done.
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Rakuten Group
As mentioned previously, it is easy to use and access since the you can chat, send voice memos or stickers in a conversation. So in overall it's very entertaining. But throughout that, the audio quality can seem to be a bit off. (Could be personal headset issue) Overall that is the only issue that is present or consistent.
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Pros
Open Source
  • Proxy server.
  • Security Firewall.
  • SIP to PSTN gateway.
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Rakuten Group
  • Viber is a cross platform product. It does not matter if someone uses Android or iOS device, it will work exactly the same.
  • Also the desktop version is very good. You can switch between the desktop and mobile versions within a conversation and see updates right away.
  • It's a very international product. It has been available for very long time, which makes it very wide spread - it has a good user base.
  • You can see the status of your messages.
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Cons
Open Source
  • Interportability
  • SIP conversions.
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Rakuten Group
  • When someone sends a file in Viber, the program automatically saves it in your phone memory. This means that you must delete them manually and it really annoys me, as it takes a lot of time to do that.
  • It contains enormous amounts of adds.
  • There is file sharing limit.
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Support Rating
Open Source
No answers on this topic
Rakuten Group
I have not frequently used the support for Viber as I have not had many problems with it on my phone. I did use support one time for problems with the computer application and used the forums to solve my problems. They were fairly easy to follow and I appreciated the online help in that format.
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Alternatives Considered
Open Source
As Kamailio SIP Server is an open source, the major impact is on cost; it's free to use compared to any other Softswitch or server in the market. You can also customize it to your need and use the features that you need, which is one of the major plus points for the Kamailio SIP Server. And one server is enough to handle thousands of calls simultaneously.
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Rakuten Group
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.
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Return on Investment
Open Source
  • As its open source ROI is excellent.
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Rakuten Group
  • Viber saves me financially since I am now able to communicate with my international clients for free.
  • Viber helps keep my clients engaged by the fact that I can so easily share photos, which is important as a freelance photographer.
  • Viber allows me to make my messages to clients appealing in a visual way, which I have noticed helps drive actions of my clients, such as remembering to book their next session or pay for their photo order.
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ScreenShots