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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

"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."
"The microphone's noise cancellation and static feature that record a human's voice are some of the most valuable features."
"The huddle feature is valuable to me."
"The most valuable feature for me was the different channels."
"Slack is a really easy collaboration tool to use and many companies are adopting this popular tool."
"The portal is at its best version now."
"With respect to being a clean and efficient communications platform, I think that it does the job quite well."
"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 event, a company-wide gathering, or a social event, all the information is shared there. This keeps us all updated."
"The most valuable feature is that we can easily integrate different workloads and the alerts are reliable. Also because it allows us to use it as a monitoring tool sometimes."
"I like Slack's notifications. It is more user-friendly and pleasing than Teams."
 

Cons

"The audio calling service needs to improve its quality."
"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."
"Integrating Slack with calendar functions would be advantageous, allowing for the seamless scheduling of meetings within the platform."
"Its capabilities to provide security features could be better for corporations."
"Slack is not as strong as competitors like Teams when it comes to things like video meetings and audio meetings."
"Slack's channel and chat management could be more intuitive. Configuring chats and pinning in Teams is easier, even though Slack has these features, they are not intuitive enough to engage with."
"The product should provide integration with other solutions like Gmail or Outlook."
"We’d like it to have more capability for everyone to work on one doc in real time all at once."
"I think Slack could add additional features without making the solution slower or more difficult to use."
"I would like the text in chat to be more customizable."
 

Pricing and Cost Advice

"The license grants you a subscription and costs about $120. I am not aware of additional costs."
"We use the free version that does not have a license."
"It is an affordable solution."
"When it comes to pricing, it is on the expensive side."
"The solution’s pricing is cheap."
"I would rate the tool's pricing a four out of ten."
"Slack is definitely worth the money."
"The solution is cheap in my country."
"The tool's pricing could be cheaper."
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Top Industries

By visitors reading reviews
No data available
Educational Organization
56%
Computer Software Company
9%
Financial Services Firm
7%
University
4%
 

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?
Sometimes Slack behaves unexpectedly and shuts down without notification or support communication. There is a need to add a call group feature to facilitate scheduling and conducting meetings withi...
 

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: June 2025.
860,168 professionals have used our research since 2012.