I use Slack primarily for communications. This includes communicating with individuals as well as grouping people into cells to work on specific parts of a project. We don't use the features beyond just the basic communicative side of it.
Founder & CEO at Pathbreaker Pty Ltd
A clean and efficient communications platform that is good for large teams
Pros and Cons
- "With respect to being a clean and efficient communications platform, I think that it does the job quite well."
- "I have found it cumbersome to create and set up groups, or channels."
What is our primary use case?
What is most valuable?
With respect to being a clean and efficient communications platform, I think that it does the job quite well.
It's very good for when you have a large number of people working within the team. It can be a challenge to ensure that people are working within the bounds of the project that they are assigned to, and Slack is effective for ensuring that happens.
What needs improvement?
I have found it cumbersome to create and set up groups, or channels. I recall having to go through the application, then back to the web site, and then back to the application. I didn't really like that and this is something in the interface that should be improved. If it were possible or easier to create those working groups within the application, without being taken into a browser and working entirely within the software itself, that would be ideal.
I would like to see integration with collaborative tools, such as word processing software or programming environments and coding software, made clear, easy, and as broad as possible. It should handle simple products, all the way to complex ones. It should be easily embeddable inside a channel so that anyone can use it.
I think that changing the privileges to remove restrictions would help the users to adapt to the platform more easily, removing bottlenecks. Having to request access for particular users is time-consuming and it would be better if more people can do these things themselves.
For how long have I used the solution?
I have been using slack since the beginning of 2019.
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Slack
April 2025

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What do I think about the stability of the solution?
I have not noticed any bugs, glitches, or other issues with stability.
What do I think about the scalability of the solution?
We have between 30 and 50 users.
Which solution did I use previously and why did I switch?
A lot of the work that we're doing now ends up on Microsoft Teams. Whether I like it or not, it tends to marginalize and eventually push Slack out of the picture.
How was the initial setup?
I found the initial setup to be straightforward. You can also bombard people with reminder messages that they should be joining a channel or discussion. In fact, I've had less trouble with slack than I've had with Teams.
What other advice do I have?
From my perspective, this is a good product and I definitely recommend it. My advice for anybody who is implementing this type of product is to first consider what it is that they want to achieve, and then make the decision about which product to implement based on that. If you're trying to pick between platforms, like Teams versus Slack, I would recommend Slack for a variety of reasons. Even if you are using Teams already, I would suggest using Slack in addition because you can't go wrong.
I would rate this solution an eight out of ten.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Founder, CEO at a tech services company with 11-50 employees
Organized communication with categorized channels and content sharing
Pros and Cons
- "Slack's categorization of content and the availability of channels are highly valuable, as they keep communications organized."
- "Slack's Canvas feature could be improved in terms of its user experience."
What is our primary use case?
We mainly use Slack as a communication channel. Additionally, we use it for remote working and voice meetings through Slack Connect.
How has it helped my organization?
Using Slack has significantly improved our internal communications, helping avoid personal and work communications being mixed. With Slack, we have categorized channels that help in maintaining clarity in communication.
What is most valuable?
Slack's categorization of content and the availability of channels are highly valuable, as they keep communications organized.
We also use Slack's features for brief ideation, sharing content onto Notion for comprehensive documentation. We are really satisfied with Slack, having used it since my first company for about five years.
What needs improvement?
Slack's Canvas feature could be improved in terms of its user experience. While they are trying to integrate something like Notion, it doesn't work well, which is why we still use Notion for official documentation.
For how long have I used the solution?
I have been using Slack for about five years.
What do I think about the stability of the solution?
Slack has been very reliable, with server issues occurring only once or twice a year.
How are customer service and support?
We have never contacted Slack support since we haven't had any issues.
How would you rate customer service and support?
Positive
Which solution did I use previously and why did I switch?
Before using Slack professionally, we used platforms like KakaoTalk, which mixed work and personal communications and lacked a clear system for organizing conversations.
How was the initial setup?
The setup was straightforward as we simply use Slack as a communication channel.
What's my experience with pricing, setup cost, and licensing?
The pricing is reasonable. While cheaper would be better, we are generally satisfied with the current pricing model.
Which other solutions did I evaluate?
Discord is more customizable than Slack but is also more complicated and suited more for casual or club environments rather than professional company use.
What other advice do I have?
If your organization needs a fixed number of participants and an organized communication structure, Slack should be adopted instead of a messaging app. People who have used competitors like Microsoft Teams often prefer Slack.
I rate Slack ten out of ten, as I've never considered replacing it.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Last updated: Nov 21, 2024
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Slack
April 2025

Learn what your peers think about Slack. Get advice and tips from experienced pros sharing their opinions. Updated: April 2025.
851,823 professionals have used our research since 2012.
Software engineering manager at a university with 1,001-5,000 employees
Helps with basic communication but needs to improve stability
Pros and Cons
- "Slack helps me to read bulk messages."
- "The tool has stability issues that need to be improved. We are not native English speakers and Slack needs to integrate grammar checks."
What is our primary use case?
We use the solution for basic communication such as chatting.
What is most valuable?
Slack helps me to read bulk messages.
What needs improvement?
The tool has stability issues that need to be improved. We are not native English speakers and Slack needs to integrate grammar checks.
For how long have I used the solution?
I have been working with the product for five to six years.
What do I think about the scalability of the solution?
I would rate the product's scalability an eight out of ten. My company has 5000 users on Slack.
How are customer service and support?
I haven't encountered any outages and hence never contacted the support.
How was the initial setup?
Slack's setup is simple.
What other advice do I have?
I would rate Slack a nine out of ten.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Product Development Manager at a tech services company with 11-50 employees
The product enables efficient communication and collaboration, but it crashes when used on the desktop
Pros and Cons
- "Slack provides very fast communication."
- "The product crashes when I use it on the desktop."
What is our primary use case?
We use the product in the office for communication. It's our main channel for any communication.
What is most valuable?
Slack provides very fast communication. The communication is sent directly to me, so I do not miss out on anything. The product provides various channels to communicate. A channel is like a team, where all communication regarding a team is sent. The product gives the flexibility of having many channels. Communication is isolated and sent to the right person at the right time. Slack has a voice messaging feature.
What needs improvement?
The product crashes when I use it on the desktop. The product must improve user experience. It would be quite interesting if Slack works with Microsoft Teams.
For how long have I used the solution?
I have been using the solution for six years.
What do I think about the stability of the solution?
The product crashes sometimes. I've never understood what the problem is. It happens intermittently. I don't know what really makes it crash, but it happens once in a very long time.
What do I think about the scalability of the solution?
The solution is scalable. We are a huge team. We’re about 40 people. All of us use it seamlessly. It achieves our objective as a small team.
Which solution did I use previously and why did I switch?
In 2006, we used IP Messenger. It worked the same way but could be used only in the office. We didn't have any visibility of the communication outside the office. It did not have channels. It had many drawbacks, and Slack solved a lot of those problems.
How was the initial setup?
The solution is quite easy to set up. Anyone can easily set up the product, whether senior employees, junior employees, or professionals.
What other advice do I have?
I use Slack on my desktop. I have it on my phone too. All communications reach me as soon as they are sent, whether I’m in the office or outside. I don't look at the product for improvement. I appreciate what the product is doing. I'm not an administrator. I am a typical user. I joined the Slack channel because I was invited. I have access to Slack as a user, not as an administrator. I used IP Messenger as a software developer for a medium-sized organization in Kenya. We could share files. We could send text messages and all of it. We couldn’t use IP Messenger outside the office. It did not have channels.
For people who need constant communication and don’t want to rely on emails, Slack is the right tool for them. We can work on the mobile phone to communicate on the go. As long as we have internet connectivity, it is secure. We can create as many channels as we like and collaborate. We can also do voice calls and send voice notes. Overall, I rate the product a seven out of ten.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Sales Manager at TioMarkets
Valuable for announcements and communicating between team members
Pros and Cons
- "It's valuable for announcements and communicating between team members."
- "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."
What is our primary use case?
We use Slack for communication and announcements.
The solution is deployed on-premises. We have around 65 people using this solution in our company.
What is most valuable?
It's valuable for announcements and communicating between team members.
It also gives you the ability to have video calls and share your screen.
What needs improvement?
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.
For how long have I used the solution?
I have been using Slack for roughly three and a half years.
What do I think about the stability of the solution?
It has not crashed once in three years, so I would say it's pretty good.
What do I think about the scalability of the solution?
The scalability is okay.
How are customer service and support?
We haven't had any issues, so we haven't needed to contact technical support.
How was the initial setup?
It's very simple. You just use your work email, sign in, and that's about it.
What other advice do I have?
I would rate this solution 8 out of 10.
My advice is to use both the mobile and desktop versions.
Which deployment model are you using for this solution?
On-premises
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Project Manager at Sparklehaze
Helps to create groups, share documents, and communicate
Pros and Cons
- "The solution makes it easy to create groups, share documents, and communicate."
- "Slack feels clustered and hence it should improve its design and UI."
What is most valuable?
The solution makes it easy to create groups, share documents, and communicate.
What needs improvement?
Slack feels clustered and hence it should improve its design and UI.
For how long have I used the solution?
I have been working with the solution for six months.
What do I think about the stability of the solution?
Slack is stable.
What do I think about the scalability of the solution?
I would rate the solution's scalability an eight out of ten. My company has 30 users for Slack and we plan to increase the usage in the future.
How was the initial setup?
Slack's setup is easy and takes only a few minutes to complete.
What's my experience with pricing, setup cost, and licensing?
I would rate the tool's pricing a four out of ten.
What other advice do I have?
I would rate Slack an eight out of ten. I recommend the solution since it covers all the basic needs.
Which deployment model are you using for this solution?
Hybrid Cloud
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Senior BA at a financial services firm with 11-50 employees
Easy-to-use and intuitive collaboration tool
Pros and Cons
- "The solution is scalable."
- "Its capabilities to provide security features could be better for corporations."
What is our primary use case?
We use the solution for communication within our internal teams and with external organizations.
What is most valuable?
The solution is intuitive, easy to use, and has many essential features. Also, the notifications features for its mobile version work the best. In addition, we can set it up as per our preferences, which is helpful and advanced.
What needs improvement?
The solution's capabilities to provide security features for corporations could be better. Along with it, the mobile version's calls and sharing video features could be faster.
For how long have I used the solution?
We have been using the solution for more than four years.
What do I think about the stability of the solution?
The solution's stability for the mobile version could be better as it freezes sometimes. At the same time, it works fine for the desktop version.
What do I think about the scalability of the solution?
The solution is scalable. We have 150 users in our organization.
What other advice do I have?
It is a good collaboration tool. It makes communication within our organization easier. Our Administrators can also lock down the channels for exchanging messages and use them as an announcement tool.
I rate it an eight out of ten.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Senior Engineering Manager at a wholesaler/distributor with 5,001-10,000 employees
A Stable and Scalable solution for Team Communication and Monitoring
Pros and Cons
- "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."
- "The solution should have less frequent updates."
What is our primary use case?
We use Slack for Team communication and also for channel alignment functionality. We also use the solution for monitoring. Meaning that we integrate it with other workloads that we have in the cloud, so that we can monitor.
What is most valuable?
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.
What needs improvement?
The solution should have less frequent updates.
For how long have I used the solution?
I have experience with Slack.
What do I think about the stability of the solution?
It is a stable solution. I rate the stability a ten out of ten.
What do I think about the scalability of the solution?
It is a scalable solution. A few thousand users are using the solution presently.
How are customer service and support?
I did not have the need to contact the technical support team.
What other advice do I have?
I would recommend this solution because it has reliability of all the functionalities, the channel functionality, the visibility of the channel. And as I mentioned before, the use cases that we have with reliable alerts and monitoring of different workloads. So for me, the solution is very easy to use from that perspective.
I rate the solution a ten out of ten.
Disclosure: I am a real user, and this review is based on my own experience and opinions.

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I am really impressed with Slack, it quickly helps to organise different teams and collaboration across different projects and clients.