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Avaya Spaces vs Slack comparison

 

Comparison Buyer's Guide

Executive SummaryUpdated on Jan 23, 2025

Review summaries and opinions

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Categories and Ranking

Avaya Spaces
Ranking in Enterprise Social Software
17th
Average Rating
7.6
Reviews Sentiment
7.4
Number of Reviews
3
Ranking in other categories
No ranking in other categories
Slack
Ranking in Enterprise Social Software
2nd
Average Rating
8.4
Reviews Sentiment
7.5
Number of Reviews
76
Ranking in other categories
No ranking in other categories
 

Mindshare comparison

As of July 2025, in the Enterprise Social Software category, the mindshare of Avaya Spaces is 0.9%, up from 0.7% compared to the previous year. The mindshare of Slack is 12.8%, up from 10.0% compared to the previous year. It is calculated based on PeerSpot user engagement data.
Enterprise Social Software
 

Featured Reviews

Karina Rivadeneira - PeerSpot reviewer
A collaborative tool with a good noise cancellation feature
We use it to conduct meetings because it is private.  The microphone's noise cancellation and static feature that record a human's voice are some of the most valuable features. The application also provides notices to everyone at the same time. You can easily use it on your phone, so it's a very…
Awais Mehmood - PeerSpot reviewer
Automation features and user-friendly interface support seamless communication
Slack is very supportive in terms of communication between my colleagues and clients. While working with the reimbursement feature, I found the automation capabilities on Slack to be incredibly useful, allowing me to automate messages for specific dates or times and even to greet someone on their birthday. I haven't specifically used the channel organization feature of Slack, as I am added to channels, but I use it with Airtable, which automates notifications to a specific Slack channel when a user fills out a form on our website. In my experience, Slack is a stable product for communication, and I appreciate its automation features and integration of AI capabilities for enhancing specific functions.

Quotes from Members

We asked business professionals to review the solutions they use. Here are some excerpts of what they said:
 

Pros

"The microphone's noise cancellation and static feature that record a human's voice are some of the most valuable features."
"We use the solution for document sharing, video conferencing, instant messaging, and file sharing."
"Stability for Avaya Spaces is quite good, and I would rate it a 9."
"I like the tool's ability to send voice mail. We can also search for conversations easily in Slack."
"We use Slack for general communication, conference calls, and sharing screens because we have people working from different countries."
"The huddle feature that allows you to get on a call with a colleague is one of the best features of Slack."
"I like Slack's notifications. It is more user-friendly and pleasing than Teams."
"We use thread-based communication. So that if a new person comes to look into a problem for a particular task, they can easily go and look into the particular thread it is discussed in."
"I am impressed with the product's calls and screen share features which are very useful."
"The product is user-friendly."
"Slack's stability is exceptional."
 

Cons

"There were some additional features coming up, as they informed us through email. But we didn't get any update on them."
"The initial setup for Avaya Spaces is very good for me, but for sharing with other users, the setup is a little bit complex compared to other solutions I have used, such as Zoom or Teams, as the installation is more complex."
"The audio calling service needs to improve its quality."
"The solution should have less frequent updates."
"There could be a read function so that when you send a message, instead of the other person having to add a reaction, you know that the message went through."
"The reason is we are moving towards a new CRM, so we have a suitable solution to integrate with the new CRM."
"The mobile app needs improvement. It consistently misses notifications."
"Integrating Slack with calendar functions would be advantageous, allowing for the seamless scheduling of meetings within the platform."
"Slack's channel and chat management could be more intuitive."
"I haven't experienced any noticeable return on investment since starting with Slack."
"The video calling experience on Slack needs improvement."
 

Pricing and Cost Advice

"The license grants you a subscription and costs about $120. I am not aware of additional costs."
"The solution is expensive."
"The solution is cheap in my country."
"I would rate the tool's pricing a four out of ten."
"The tool's pricing could be cheaper."
"The pricing can range up to about twenty bucks a user. You can spend a lot of money, especially if you're talking about thousands of users. Generally speaking, Slack is less expensive than Teams. Slack doesn't include all the bells and whistles that Teams does. So you can go from a $6 license in Microsoft 365 to a $50 license per user per month, and there's a lot more you can do in the $50 license."
"When it comes to pricing, it is on the expensive side."
"It is an expensive tool. We pay 15 to 20 USD monthly per user."
"We use the free version that does not have a license."
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Top Industries

By visitors reading reviews
No data available
Educational Organization
43%
Computer Software Company
10%
Financial Services Firm
10%
University
5%
 

Company Size

By reviewers
Large Enterprise
Midsize Enterprise
Small Business
No data available
 

Questions from the Community

What do you like most about Avaya Spaces?
The microphone's noise cancellation and static feature that record a human's voice are some of the most valuable features.
What is your experience regarding pricing and costs for Avaya Spaces?
The license grants you a subscription and costs about $120. I am not aware of additional costs.
What needs improvement with Avaya Spaces?
I don't have experience with how Avaya Spaces handles integration with other software tools, but perhaps my partners have experience regarding integration with different vendors. If Avaya can integ...
What do you like most about Slack?
Nowadays, we don't need to visit an HR portal. Our marketing and human resources teams directly share details about birthdays, upcoming events, and important dates in Slack. Whether it's a training...
What is your experience regarding pricing and costs for Slack?
I am not aware of pricing, setup costs, or licensing, due to my company's partnership with Slack.
What needs improvement with Slack?
From my perspective, a disadvantage of Slack compared to Teams is that connecting between the apps can be a bit difficult. In Teams, all applications available in the Microsoft launchpad are easily...
 

Comparisons

 

Also Known As

Avaya Cloud Application Link
No data available
 

Overview

 

Sample Customers

Stop Soldier Suicide, British Columbia Ski Resort, Helse Vest, Spital Limmattal, Conduit Global
Strava, The New York Times, Spotify, Blue Bottle Coffee Company, Eventbrite, Box, Circa, Stripe
Find out what your peers are saying about Avaya Spaces vs. Slack and other solutions. Updated: July 2025.
861,524 professionals have used our research since 2012.