We are using Slack to collaborate between employees, as many of them are working from home. While I personally started using it a couple of years ago, it has been about a month since all of our employees began using it.
Project Manager - Business Consultant at Comtrade System Integration
An easy to use, cost-effective collaboration tool with all the functionality that we need
Pros and Cons
- "Slack makes it easy for employees to contact each other and exchange documents or information."
- "I would like to see a special feature for multiple people to collaborate on a document, working on it at the same time."
What is our primary use case?
How has it helped my organization?
Slack allows our employees to share information on a daily basis without overloading email.
What is most valuable?
This solution is easy to use.
Slack makes it easy for employees to contact each other and exchange documents or information. It is not like a big CRM but for internal usage, it's good enough.
What needs improvement?
I would like to see a special feature for multiple people to collaborate on a document, working on it at the same time.
For most add-ons, clients need to know the command to run the add-ons. I think it would be useful for them to design the appropriate icons so that non-IT clients can launch them in a simple and easy way. For example, starting a video conference with an already defined room.
It would be useful for an organization to be able to define a specific storage space for the storage of all documents exchanged by teams
Buyer's Guide
Slack
March 2025

Learn what your peers think about Slack. Get advice and tips from experienced pros sharing their opinions. Updated: March 2025.
842,592 professionals have used our research since 2012.
For how long have I used the solution?
I have been using Slack for two years.
What do I think about the stability of the solution?
This is a stable solution.
What do I think about the scalability of the solution?
We are only using the free version so I do not really know about the scalability.
We have 300 users and daily, there are 60% to 70% of them using it.
How are customer service and support?
I have not needed to contact technical support.
How was the initial setup?
Slack is very easy to set up and there are only a few steps involved.
What about the implementation team?
We deployed this solution ourselves. It was easy to send employees invitations to join.
What's my experience with pricing, setup cost, and licensing?
We use the free version that does not have a license.
Which other solutions did I evaluate?
We may use Microsoft teams in place of Slack in the future, although this is not a decision that I will be part of. At this time, there is not much interest in moving to Zoom or Teams.
We did not want to spend too much time investigating options before starting our remote work and because I was familiar with Slack, this is what I chose.
What other advice do I have?
My advice for anybody who is researching Slack is that it is easy to set up and quite helpful for daily common things. We use only the free license but it is enough for us. If we continue to use Slack after the current crisis ends then we may buy more features and add-ons. For now, however, we have what we need.
Overall, we are satisfied with Slack.
I would rate this solution an eight out of ten.
Which deployment model are you using for this solution?
Public Cloud
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.
Buyer's Guide
Slack
March 2025

Learn what your peers think about Slack. Get advice and tips from experienced pros sharing their opinions. Updated: March 2025.
842,592 professionals have used our research since 2012.
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
Flag as inappropriateCloud Engineer, Content Writer at Planet Flora
A highly stable and affordable solution that can be used for team collaborations
Pros and Cons
- "Tasks and team huddles are the most valuable features of Slack."
- "It would be better if Slack had a 'select all' option to delete all the files."
What is our primary use case?
I use Slack for team collaboration.
What is most valuable?
Tasks and team huddles are the most valuable features of Slack.
What needs improvement?
When I share any file with my colleagues, that file remains in Slack storage even after I delete the message. I need to manually delete them one by one. It would be better if Slack had a 'select all' option to delete all the files.
For how long have I used the solution?
I have been using Slack for four years.
What do I think about the stability of the solution?
Slack is a stable solution.
I rate Slack ten out of ten for stability.
What do I think about the scalability of the solution?
Around 20 users are using Slack in our organization, and we have plans to increase the usage.
I rate Slack an eight out of ten for scalability.
How was the initial setup?
On a scale from one to ten, where one is difficult, and ten is easy, I rate Slack a seven out of ten for the ease of its initial setup.
What's my experience with pricing, setup cost, and licensing?
The solution’s pricing is cheap.
What other advice do I have?
I use Slack on the cloud as a SaaS service. I recommend Slack for better conversations in a product team.
Overall, I rate Slack a nine out of ten.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
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: I am a real user, and this review is based on my own experience and opinions.
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: I am a real user, and this review is based on my own experience and opinions.
Social Selling Strategist & Social Media Marketing Programs Manager at a consultancy with 1-10 employees
The most valuable features are direct messaging and having conversations in channels.
What is most valuable?
Direct messaging and having conversations in channels. I love the channels feature, because it allows you to sort conversations. The only people who will see those conversations are people who are interested in that channel or are part of that initiative/project.
How has it helped my organization?
We have slashed our internal emails by 30% and streamlined the tools we use for instant messaging.
What needs improvement?
The profile feature needs improvement. There is little room to add details to this section. It would be nice to be able to add more links or have other ways to connect in this section.
The ability to flesh out the Profile section in Slack by including links
to multiple social channels, a beefier bio and a link to a website would
be helpful for communities using Slack. This feature may not be as
necessary for teams using Slack as an internal communication tool, but
it would encourage them to follow each on other social channels and
potentially spark more engagement across channels.
For how long have I used the solution?
I have been using Slack for just over a year.
What do I think about the stability of the solution?
We have not had stability problems.
What do I think about the scalability of the solution?
We did have scalability issues. If you are on the free plan, you are only allowed 10,000 messages before everything is archived. This is a big problem for an alumni group which I am a member of that uses Slack.
Our messages are archived every two weeks, which makes it challenging to search for former conversations.
The price of using Slack would be $30,000/year for that community, which I think is quite steep.
How are customer service and technical support?
I've never used technical support.
Which solution did I use previously and why did I switch?
I used Skype for instant messaging and LinkedIn/Facebook groups for community engagement. Skype is clunky and has an outdate user interface.
Slack is slick, smooth, and easy on the eyes.
LinkedIn/Facebook groups are cluttered and distracting. It's too easy for an "oh, shiny" moment to happen on those social platforms.
How was the initial setup?
The setup was straightforward. Slack is great about walking you through the process of setting up channels and inviting people to join.
What's my experience with pricing, setup cost, and licensing?
Stay on the free version and use PaperBot in every Slack channel to "archive" conversations. This helps you work around the problem with 10,000 messages.
Which other solutions did I evaluate?
We looked at Skype for instant messaging and Discourse for community engagement.
What other advice do I have?
If you're looking for an asynchronous/real-time communications tool, you will not find any app that comes close to Slack.
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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