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Unified Communications as a Service (UCaaS) vs Slack

Updated February 9, 2026

Unified Communications as a Service (UCaaS) vs Slack: Which is best for you?

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1 million+ businesses helped
2 million+ verified software reviews
Starting Price

Pricing available upon request

$8.75

per month

Free Trial
Free Version
Screenshots
and Demo
Product Screenshot
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Product Screenshot
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Top Rated
  Features
Call Routing
4.56
Voice Mail
4.44
Caller ID
4.38
See All
Group Management
4.90
Group Messaging
4.87
Chat/Messaging
4.85
See All
Integrations
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Betterworks
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Hootsuite
Hootsuite
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Pros / Cons
  • The IM, audio and video conferencing, not to mention the telephony platform is outstanding.
  • The Osmosis portal is a bit antiquated and the reporting isn't user friendly.
Read more
  • It allows for sharing of documents, links, doing a hurdle, and screen sharing and all those other essential things important in a semi professional environment.
  • I hate it when I receive a call and I don't have my earphones connected. If I answer the call directly, I find that many times the earphones are not recognized, and usually I need to restart Slack to make my earphones recognizable. When you have an important call, that sucks.
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Ease-of-Use
4.3/ 5
Highest performing feature
in the comparison
4.6/ 5
Value for Money
4.2/ 5
Highest performing feature
in the comparison
4.6/ 5
Customer Support
4.3/ 5
Highest performing feature
in the comparison
4.4/ 5
Functionality
4.3/ 5
Highest performing feature
in the comparison
4.6/ 5
Support Options
Email/Help Desk
FAQs/Forum
Knowledge Base
Phone Support
24/7 (Live Rep)
Chat
Email/Help Desk
FAQs/Forum
Knowledge Base
Phone Support
24/7 (Live Rep)
Chat
Training Options
In Person
Live Online
Webinars
Documentation
Videos
In Person
Live Online
Webinars
Documentation
Videos
FrontRunners
N/A
FrontRunners 2025
Advisor
  Recommendations
N/A
N/A
Ideal Customer Size
Small
Medium
Large
Small
Medium
Large
Deployment Options
Cloud, SaaS, Web-Based
Desktop - Mac
Desktop - Windows
Desktop - Linux
Desktop - Chromebook
On-Premise - Windows
On-Premise - Linux
Mobile - Android
Mobile - iPhone
Mobile - iPad
Cloud, SaaS, Web-Based
Desktop - Mac
Desktop - Windows
Desktop - Linux
Desktop - Chromebook
On-Premise - Windows
On-Premise - Linux
Mobile - Android
Mobile - iPhone
Mobile - iPad