The product makes communication seamless. There are around 200 employees in my organization. If the HR personnel want to reach us, they use the channels to put up messages, posters, and banners for workplace events or blood donation drives. They use the channels whenever they want to spread information about anything.
Software Engineer at a computer software company with 1-10 employees
A scalable and easy-to-deploy solution that enables seamless communication within the organization
Pros and Cons
- "The product makes communication seamless."
- "The UI could be a little bit better."
How has it helped my organization?
What is most valuable?
Slack is a really good solution. We can see whether our colleagues are available or away. If we need to share any information within our team, we can create a channel and share the information. We can share technical and non-technical information like, HR information using the product. Information sharing is the feature I like the most. The product allows us to update our status to communicate whether we are away or out for lunch. We can also make notes to ourselves using the solution. It functions quite well.
What needs improvement?
The UI could be a little bit better.
For how long have I used the solution?
I have been using the solution consistently for the last year.
Buyer's Guide
Slack
May 2025

Learn what your peers think about Slack. Get advice and tips from experienced pros sharing their opinions. Updated: May 2025.
857,028 professionals have used our research since 2012.
What do I think about the stability of the solution?
The tool is stable. Many employees in the organization are happy to use the product.
What do I think about the scalability of the solution?
The solution is scalable. As more and more people join the organization, they are able to use the tool.
How was the initial setup?
The initial setup was easy. The solution is deployed on the cloud.
What other advice do I have?
I work from home. I do not use the on-premises product. If people use it consistently, they will understand how to use it and communicate with their teams properly. Overall, I rate the solution an eight out of ten.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Senior Director - Data Management at a tech services company with 1,001-5,000 employees
A collaborative tool that helps teams across different locations to have a common workspace
Pros and Cons
- "I am impressed with the product's calls and screen share features which are very useful."
- "I want a feature in the solution that will help me share documents only with the set of people that I prefer rather than all of them. I would also like the solution to have a feature similar to Microsoft SharePoint where you can group all your documents."
What is our primary use case?
The tool helped us with collaboration. Another use case for us was ticketing, where people who needed to take action could be informed immediately on Slack rather than over the conventional mechanism of emails. You need to look over hundreds of emails and then realize that there is a ticket. You can also collaborate to get document reviews done and avail feedback immediately rather than exchanging and putting it in our systems.
What is most valuable?
I am impressed with the product's calls and screen share features which are very useful.
What needs improvement?
I want a feature in the solution that will help me share documents only with the set of people that I prefer rather than all of them. I would also like the solution to have a feature similar to Microsoft SharePoint where you can group all your documents.
For how long have I used the solution?
I have been working with the product for one year.
What do I think about the stability of the solution?
I haven't encountered any issues with stability.
What do I think about the scalability of the solution?
The solution is scalable and can accommodate thousands of users. I didn't see any problem with scaling. My company has 1500 users for the product.
How was the initial setup?
We use the solution's cloud version.
What other advice do I have?
I would rate the product a nine out of ten. The tool is a great collaborative tool that works well with teams spread across different locations. It helps them to come together and have a common workspace to work efficiently. Slack is a productivity improvement tool as well. My company has migrated to Teams since we subscribed to the Office 365 suite and switched to a standard communication channel.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
Buyer's Guide
Slack
May 2025

Learn what your peers think about Slack. Get advice and tips from experienced pros sharing their opinions. Updated: May 2025.
857,028 professionals have used our research since 2012.
Associate Vice President at Onnivation
A secure and widely-used solution that integrates easily and is helpful for internal and external communication
Pros and Cons
- "You can create channels between teams internally and externally, which is great. There is a lot of security with Slack internal, which is what I value."
- "I would like to be able to do live streaming on Slack. Slack allows Slack huddle where you can do a group call, but it is not very well-designed. I'm not sure if it is going very well, but live streaming is one thing that I would definitely love to see. When you use Zoom, I like how you can run webinars. If we could do that through Slack, it would become an all-integrated platform. I would also like to be able to schedule meetings using Slack, similar to Zoom."
What is our primary use case?
We use it for internal communication, and we also use it for external communication or customer relations.
What is most valuable?
You can create channels between teams internally and externally, which is great. There is a lot of security with Slack internal, which is what I value.
You can very easily share large files through Slack. Integration is easy.
What needs improvement?
Their notifications are generally not very prompt. There is a problem with their notification engine, and sometimes, I end up pressing on notifications. There are a few bugs there.
It also tends to lag sometimes. It gets slow.
I would like to be able to do live streaming on Slack. Slack allows Slack huddle where you can do a group call, but it is not very well-designed. I'm not sure if it is going very well, but live streaming is one thing that I would definitely love to see. When you use Zoom, I like how you can run webinars. If we could do that through Slack, it would become an all-integrated platform. I would also like to be able to schedule meetings using Slack, similar to Zoom.
I would like to see better connectivity between Slack and Gmail where Slack can prompt me for some of the things from my Gmail. For example, there can be a prompt such as "This person has been mailed, and you can contact him through Slack."
It should have an automated translator. It would be helpful for interacting with people who are multilingual. For example, I speak English, but the other person might not understand English. There should be an automated translator inbuilt into Slack for such situations. Instagram has a similar feature where for a caption, you can click the See Translation button, and it does the translation for you. This is something that Slack could add.
For how long have I used the solution?
I have been using this solution for almost 18 months.
What do I think about the stability of the solution?
It is fairly stable.
What do I think about the scalability of the solution?
It can be scaled very easily. We have about 20 people who use this solution.
How are customer service and support?
I have not used their support so far.
How was the initial setup?
It was straightforward. It took one day.
What other advice do I have?
It is good. It is one of the best ones out there. You can definitely go for it.
When you're partnering with teams outside your organization, you can't really do without Slack. It becomes a necessity. We chose this solution because Slack was the most widely used solution. A lot of companies that we partner with and a lot of our customers end up using Slack. So, for us to partner with them, we needed Slack.
I would rate it a nine out of ten. It is widely used, but they need to work on its features.
Which deployment model are you using for this solution?
Public Cloud
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
CS/Retention Manager at Catchpoint LTD
Allows you to create different channels, have conference calls, and share your screen
Pros and Cons
- "We use Slack for general communication, conference calls, and sharing screens because we have people working from different countries."
- "I think Slack could add additional features without making the solution slower or more difficult to use."
What is our primary use case?
We use Slack for general communication, conference calls, and sharing screens because we have people working from different countries.
There are 53 people using Slack in our organization.
The solution is deployed on-premises.
What is most valuable?
It gives you the ability to share your screen and have conference calls. You can also create different channels. You can use it on your PC or on your phone.
We recently had to learn about another program, and somebody had to teach from abroad. They could share their screen, and we were able to have a conference call through that.
What needs improvement?
Everything has room for improvement, so I think Slack could add additional features without making the solution slower or more difficult to use.
For how long have I used the solution?
I have been using this solution for a year and a half.
What do I think about the stability of the solution?
The stability is good. It doesn't matter how many people use it.
How was the initial setup?
Setup is pretty easy.
What other advice do I have?
I would rate this solution 8 out of 10.
You can use it on your phone, not just on your PC or laptop. It pretty much works the same, and you can do almost everything on your phone.
Which deployment model are you using for this solution?
On-premises
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
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: My company does not have a business relationship with this vendor other than being a customer.
Chief Executive Officer at aximind
Good communication features help to promote collaboration between team members
Pros and Cons
- "The feature that I have found most valuable is communication between team members."
- "Customization is something that Slack is lacking."
What is our primary use case?
Our internal team primarily used Slack for communication with each other. If two or three people were working on the same modules then they were able to share code and work together.
What is most valuable?
The feature that I have found most valuable is communication between team members.
What needs improvement?
Customization is something that Slack is lacking. Otherwise, however, the user interface is very good.
For how long have I used the solution?
We have been using slack for the past one and a half years.
What do I think about the stability of the solution?
Recalled that there were some bugs about a year ago. However, I don't recall the details or what they did to rectify the problem.
How are customer service and technical support?
I have not personally been in contact with technical support. When we experienced the bugs about a year ago, my team may have been in contact with them. Ultimately, the problem was resolved.
Which solution did I use previously and why did I switch?
We primarily use Slack and Microsoft Teams. We know of Confluence but do not use it much.
Slack is a better product than Teams. Teams is more like a chat window, rather than a development window. We were also having issues with Teams, initially, with the user interface when we were trying to create groups. We found that it was not that easy, or perhaps not convenient.
What other advice do I have?
My company has been acquired so we are going to align our systems with our parent company. At this point, I am not sure if we will continue with Slack or instead move to another solution. I have suggested that we continue using the same tools, but at this point, I am not sure.
In my opinion, this is a good product and I recommend it. Slack is much better than Microsoft Teams.
I would rate this solution an eight out of ten.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.
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?
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.
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.
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: My company does not have a business relationship with this vendor other than being a customer.
Analyst at a government with 5,001-10,000 employees
Easy to use and supports multiple chat channels
Pros and Cons
- "The most valuable feature for me was the different channels."
- "Slack does not have videoconferencing capabilities, which would have been nice."
What is our primary use case?
We used Slack for all of our internal communications during the COVID pandemic.
What is most valuable?
The most valuable feature for me was the different channels. You can make categories and then jump between different channels and groups.
It is really easy to use.
What needs improvement?
Slack does not have videoconferencing capabilities, which would have been nice. It would be helpful if they added this feature in the future.
The addition of more chat features such as sending GIFs and emoticons would be an improvement.
For how long have I used the solution?
We were using Slack for about three months.
What do I think about the stability of the solution?
The stability is good. It had never failed us.
What do I think about the scalability of the solution?
It is widely used in our organization, although I cannot say how many users in total. In our department, there are 14,000 employees.
Which solution did I use previously and why did I switch?
We were using Slack and then during the COVID pandemic, we switched to Zoom. Now, we have installed Microsoft Teams and are working with it.
I think it would be excellent if they combined Slack and Zoom.
How was the initial setup?
The initial setup is easy. I had set something up wrong because I didn't make it private versus public, although I had not read anything about configuring it beforehand.
What's my experience with pricing, setup cost, and licensing?
My understanding is that we were using the free version.
What other advice do I have?
My advice for anybody who is considering Slack is that it is a great tool. For us, it's difficult to talk with other departments, so this was the ideal solution. Overall, we really liked it, although it would have been nice to have videoconferencing support.
I would rate this solution a ten out of ten.
Disclosure: My company does not have a business relationship with this vendor other than being a customer.

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