The most valuable features are the ability to communicate instantly and create channels. I can create a channel called #breakfastdiscussion, invite three people on my team, and we can chat over breakfast. I can also make a channel called #teamtalk and all the team can be invited. This is a great feature.
CEO at a tech services company with 1-10 employees
The most valuable features are the ability to communicate instantly and create channels. I want to notify users of messages that need immediate attention.
What is most valuable?
How has it helped my organization?
We can group conversations around different issues. The issues are entirely created by us, in-house. It works well for a small team with opt-in members.
What needs improvement?
I would like to be able to notify users that they have messages that need their immediate attention. If Slack picked up more features of Asana, such as ticketing and calendars and assignments, I would give it a rating of 5/5.
For how long have I used the solution?
I have been using Slack for a year and a half.
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Slack
April 2025

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What do I think about the stability of the solution?
We have not had any stability issues.
What do I think about the scalability of the solution?
We have not had scalability issues.
How are customer service and support?
Technical support is excellent.
Which solution did I use previously and why did I switch?
We did not have any previous solutions.
What's my experience with pricing, setup cost, and licensing?
It is free for us.
What other advice do I have?
It is essential for small team communication.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Works
The integrations feature is the most powerful feature because some issues are of immediate priority
What is our primary use case?
We are using Slack for all office internal communications — to create polls, reminders, notifications for builds, etc.
How has it helped my organization?
Previously, we were using Skype and HipChat, but the issue was we had bad notifications systems, so that's why we shifted to Slack.
What is most valuable?
In my opinion, the integrations feature is the most powerful feature because some issues are of immediate priority and we want to get the notification promptly, and through the Jira plug-in, we are getting those.
What needs improvement?
I think the login feature needs to be improved most because I've been having an issue with logging in to the desktop app for more than six months, but still, it's not been resolved.
For how long have I used the solution?
One to three years.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
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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.
CTO at a tech services company with 11-50 employees
The valuable features are group chat, sharing of attachments, and pinning items.
What is most valuable?
The valuable features are mainly group chat, calling, easy sharing of attachments, and pinning items. These might be basic features, but they make life much easier.
How has it helped my organization?
Communication with clients became easy. Different groups for different teams helped a lot in the planning and execution. Everyone stays updated with the progress without any ambiguity.
What needs improvement?
I believe they can improve upon ‘calling’, which was introduced recently.
For how long have I used the solution?
I have been using this solution for more than a year.
What do I think about the stability of the solution?
There were not many issues with stability, but whenever they introduced a new update, the loading time went up.
What do I think about the scalability of the solution?
There were no issues with scalability.
How are customer service and technical support?
Technical support is good. They are pretty quick with responses and provide excellent support.
Which solution did I use previously and why did I switch?
We were using Skype. We switched mainly because maintaining different client organizations is pretty easy on Slack.
Other reasons include the powerful search feature, rich messaging, a more customizable interface, chat functionality, and email notifications.
How was the initial setup?
The setup was pretty simple and quick. The sign up form was easy and the complete onboarding process was quite smooth.
What's my experience with pricing, setup cost, and licensing?
Slack is actually rewriting the rules on SaaS pricing. It’s free for basic use and offers some awesome features at no cost at all. I will highly recommend Slack to other companies.
Which other solutions did I evaluate?
We didn’t look at other alternatives.
What other advice do I have?
I am not sure if someone is looking to implement a product like Slack, but if someone is really looking for it, then it’s not that easy.
Slack took many months/years to get to this stage. More importantly, they focused on small and medium sized enterprises, which was their biggest market.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Marketing Manager at a tech vendor with 11-50 employees
It has a narrow set of features focused on team communication. I guess that's why it works well.
What is most valuable?
- Channel conversations, because it's an easy way to get to a few people or a whole team at the same time.
- Private conversations, because they're simple, convenient and they work!
- Slackbot reminders, because it's a simple way to set a reminder for yourself or a colleague, without messing with calendars.
- Integrations. For instance, thanks to integration of our own application Woodpecker.co with Slack through Zapier, we get notified each time one of our users starts the paying process and each time they complete it. We can actually see the new customers coming on board in real time.
- Slack is just a communicator, no more. It has a narrow set of features focused on team communication. It's simple. I guess that's why it works so well for us.
How has it helped my organization?
Everyone's up to date with what's going on in our product development, marketing and sales. We communicate faster and no one has any troubles learning how to use the communicator.
What needs improvement?
I would like to see if someone has already read my message, but that's just a whim, not really a necessary must-have feature.
For how long have I used the solution?
We have used the solution for over two years.
What do I think about the stability of the solution?
We hardly ever had any issues with stability. I remember Slack was only down once over the whole time I've been using it so far.
What do I think about the scalability of the solution?
We haven't yet had any issues with scalability, but our team is quite small with only 17 people at the moment.
How are customer service and technical support?
In fact, I never felt the need to contact support, so I have no experience with that, but I guess that's great!
Which solution did I use previously and why did I switch?
We used a number of solutions which were really only a feature of a bigger product.
How was the initial setup?
The setup was simple for me, but I was joining the team someone else set up.
What's my experience with pricing, setup cost, and licensing?
We're using the free version and some people from our team wish that the message history had not been removed, so if you sometimes need to go back a few months in a conversation, the paid version would be something to consider.
What other advice do I have?
Definitely give Slack a try.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
VP of Marketing at OurCrowd
It's fairly simple to get used to. Also, the cross platform experience between the web version, mobile and desktop apps is impressively smooth.
Valuable Features:
Having group chats and one-on-one chats in one place makes Slack conventient. It's fairly simple to get used to. Also, the cross platform experience between mobile app, desktop app, and web version is impressively smooth.
Improvements to My Organization:
More often than not, members of our team are on the go rather than in the office. With Slack we have increased communication between teams which has improved executions of complex interdepartmental procedures.
Room for Improvement:
There is some lag at times. Also, would prefer video chat functionality built in rather than as an add-on.
Use of Solution:
Two years.
Deployment Issues:
Nope. Only colleague resistance on certain teams.
Stability Issues:
A bit of lag as mentioned.
Customer Service:
Haven't experienced a customer support representative. Site help docs are fairly strong.
Initial Setup:
Extremely straightforward.
Other Solutions Considered:
Yes. We tried Skype, Viber, Gchat.
Other Advice:
There is a built-in cuteness factor with animated gif options as commentary.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Devops engineer at a tech services company with 11-50 employees
Helps to communicate with colleagues
Pros and Cons
- "I use Slack for communication with my colleagues."
- "When someone responds to my message in Slack, a new window opens. There should be an option to roll down the answers."
What is our primary use case?
I use Slack for communication with my colleagues.
What needs improvement?
When someone responds to my message in Slack, a new window opens. There should be an option to roll down the answers.
For how long have I used the solution?
I have been working with the product for three months.
What do I think about the stability of the solution?
I would rate the product's stability a ten out of ten.
What do I think about the scalability of the solution?
I would rate Slack's scalability a nine out of ten. My company has 60 users for the solution.
How was the initial setup?
Slack's installation is very simple and I don't think I spent more than five minutes to complete it.
What other advice do I have?
I would rate Slack a nine out of ten. I use the application on my desktop and I don't use a mobile version now. However, I may use it in the future.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Operations Manager at Be You Plus
I really liked the Slack bot and its integration with partners to make the work easy
What is our primary use case?
It's our organization's chatroom where workflows and information are passed. We use Slack for communication within teams.
How has it helped my organization?
Slack has been very useful in our organization for doing communications and passing on pieces of information.
What is most valuable?
I really liked the Slack bot and its integration with partners to make the work easy and with proper flow. We can create a group also.
What needs improvement?
- I think it's the best till now and the Slack team is doing well.
- It will be great if they can start using the offline mode chat. Once we are back online, it will float the messages again.
For how long have I used the solution?
One to three years.
What do I think about the stability of the solution?
The product is stable, but you need an online connection.
What do I think about the scalability of the solution?
This product has been doing well until now.
Which solution did I use previously and why did I switch?
We were using Google Hangouts before Slack.
How was the initial setup?
The initial setup was very easy.
What about the implementation team?
It was an in-house implementation and easy to set up.
What's my experience with pricing, setup cost, and licensing?
You can have a free trial also for Slack, and its pricing depends on the features and team size you want to go with. The pricing is good, and it's worth it.
Which other solutions did I evaluate?
We were planning for Skype, Discord and Microsoft Teams.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Their integration is a game changer, and the UX is really great
What is our primary use case?
I use it every time. For professional and personal use. Their integration is a game changer, and the UX is really great.
How has it helped my organization?
- Process made easy
- Collaboration between teams increased
- Productivity is now largely increased: top.
What is most valuable?
- Integration with Phantombuster, Box, and many many more.
- Now, teams can do much more and proactively with Slack.
What needs improvement?
- We can't improve the perfection.
- The pricing is OK.
- The UX is wonderful.
- They could improve the calling quality.
For how long have I used the solution?
Three to five years.
Disclosure: I am a real user, and this review is based on my own experience and opinions.

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Love Slack and the BoTs platform looks very interesting / useful as well!