Overall, it is a good idea as it works better than most solutions out there.
Manager, Live Production at a computer software company with 1,001-5,000 employees
Works better than most solutions out there. Notifications rarely show up.
Pros and Cons
- "Overall, it is a good idea as it works better than most solutions out there."
- "The mobile app needs improvement. It consistently misses notifications."
What is most valuable?
What needs improvement?
The mobile function is horrible.
What do I think about the stability of the solution?
Notifications rarely show up. Either messages will not send or they will send twice.
What other advice do I have?
The mobile app needs improvement. It consistently misses notifications.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Desktop Support Analyst at a non-tech company with 51-200 employees
I think Slack is a very creative application to help unify communication across all team sizes.
What is most valuable?
The channels feature is the selling point for me. Being able to create a conversation for both public and private purposes through some channels is an absolute plus.
How has it helped my organization?
I was the president of a college event planning organization. Being able to have a conversation with my executives separately from the organization members was very convenient.
With multiple events happening and multiple conversations going on, I was able to divide the conversations into their respective groups and create channels for focus groups. This increased our productivity and efficiency by more than 80%.
What needs improvement?
Archiving for direct messages made tracking back conversations very difficult once the group started to grow large.
From what I noticed while using Slack, once a channel starts growing in
its number of messages, older messages are archived. This made it more
difficult to reference older messages. To be able to search for a particular message, you'll need to remember the exact phrases or the sender.
I think it would be much easier to "Scroll back" into older messages even
though it archived.
For how long have I used the solution?
I have been using this solution for three years.
What do I think about the stability of the solution?
Stability was not an issue at any point. My team and I used it across multiple devices and platforms and the flow was seamless.
What do I think about the scalability of the solution?
We had no issues with scalability. I was able to create more channels as the team grew bigger.
How are customer service and technical support?
I never had to contact the support team.
Which solution did I use previously and why did I switch?
We were initially using email and IM chat to communicate. We switched because the conversations became unorganized and inefficient when conversations started overlapping.
How was the initial setup?
The setup was very straightforward. Once I sent an invite to my new team members, all they had to do was create a password and sign in. Their channels were pre-assigned and they had no issues joining the conversation. It was also easy to navigate.
What about the implementation team?
Through an in-house one. Level of expertise was as great as it could get.
What's my experience with pricing, setup cost, and licensing?
I had a relatively small team, so I didn’t have to worry about pricing and licensing. I only encountered pricing third-party apps and bots to help facilitate automations.
Which other solutions did I evaluate?
I did not evaluate any other options as I did not have a reason to. Eventually I heard of Ryver. I was not compelled to switch though.
What other advice do I have?
I think Slack is a very creative application to help unify communication across all team sizes. I will definitely suggest this as my first choice.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Buyer's Guide
Slack
April 2025

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Full-Stack Python Developer at Optisol
Great for thread based communication, but sometimes logging in can be difficult
Pros and Cons
- "We use thread-based communication. So that if a new person comes to look into a problem for a particular task, they can easily go and look into the particular thread it is discussed in."
- "Sometimes there are login issues."
What is our primary use case?
We use it with our clients for sharing files and for communication.
How has it helped my organization?
What is most valuable?
We use thread-based communication. So that if a new person comes to look into a problem for a particular task, they can easily go and look into the particular thread it is discussed in.
We also send/download multiple files at a time.
It's also helpful that we can do group and individual calls on Slack.
There is a great search functionality.
What needs improvement?
Sometimes there are login issues.
For how long have I used the solution?
I have experience using Slack.
What do I think about the stability of the solution?
It is stable.
What do I think about the scalability of the solution?
Slack is east to scale.
What's my experience with pricing, setup cost, and licensing?
It is an affordable solution.
What other advice do I have?
Overall, I rate the solution a six out of ten.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Associate at a financial services firm with 1,001-5,000 employees
Collaboration and communication solution used for internal messaging between employees
Pros and Cons
- "Slack is a really easy collaboration tool to use and many companies are adopting this popular tool."
- "The way groups are created on slack could be improved. Once you create a group of people, you can't add additional people unless you convert it to a channel."
What is our primary use case?
Slack is our main source of collaboration and we use it for all internal messages.
What needs improvement?
The way groups are created on slack could be improved. Once you create a group of people, you can't add additional people unless you convert it to a channel.
For how long have I used the solution?
I have used Slack for one year.
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?
This is a scalable solution.
How was the initial setup?
The initial setup is straightforward.
What other advice do I have?
Slack is a really easy collaboration tool to use and many companies are adopting this popular tool.
I would rate this solution a nine out of ten.
Which deployment model are you using for this solution?
Public Cloud
If public cloud, private cloud, or hybrid cloud, which cloud provider do you use?
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Senior Project Manager in Group Application Architecture at a tech services company with 5,001-10,000 employees
A stable platform for video conferencing, but in-meeting content sharing need to be improved
Pros and Cons
- "The most valuable features are video conferencing and sharing content during meetings."
- "I would like the in-meeting content sharing facility to be improved."
What is our primary use case?
We use Slack for having meetings with one of our vendors.
What is most valuable?
The most valuable features are video conferencing and sharing content during meetings.
What needs improvement?
I would like the in-meeting content sharing facility to be improved.
For how long have I used the solution?
We have been using Slack for about one year.
What do I think about the stability of the solution?
Slack is stable and we haven't had any problems.
What do I think about the scalability of the solution?
We have not had issues with scalability but our audiences in the meetings have not been large.
How are customer service and technical support?
The technical support is fine.
Which solution did I use previously and why did I switch?
In addition to Slack, we use Microsoft Teams as well as Skype. I think that all of these products are comparable, with nothing, in particular, that is an advantage or disadvantage.
What other advice do I have?
Overall, Slack meets the needs that we have.
I would rate this solution as average, at five out of ten.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Quality Engineer II at a tech vendor with 201-500 employees
The most valuable feature is the ability to be a part of multiple Slack channels that are specific to our needs.
What is most valuable?
The feature that is most valuable is the ability to be a part of multiple Slack channels that are all specific to our needs i.e. a product, infrastructure, personal one-on-one, small specific group, feature discussion, IT assistance, company announcements, etc.
How has it helped my organization?
The quick line of communication, most certainly improves the functionality of our organization. Discussions can happen at the drop of a hat, in a Slack channel and a critical decision can be agreed upon to take further action. Triage of customer issues can happen at the moment of crisis and this is of huge assistance as to how we can get our product back up and running, when needed.
What needs improvement?
I'd like the ability to re-organize the channels in my list. You can favorite a channel but you can't organize them in a specific order, that fits your every day use. I'd also improve it's security. It can be breached easier than an email client, so we tend to keep more confidential conversations out of the app.
For how long have I used the solution?
I have personally used this solution for over two years.
What do I think about the stability of the solution?
Our Slack bots have issues from time to time. There have been a few times where the app was done but other than that, it has been a solid performer.
What do I think about the scalability of the solution?
There were no issues with the scalability.
How are customer service and technical support?
I have personally not used technical support for Slack.
Which solution did I use previously and why did I switch?
We were using Gchat as a source to speak to each other but channel functionality is very important in Slack.
How was the initial setup?
I was not part of the initial setup.
Which other solutions did I evaluate?
I am sure that other options were evaluated but I was not a part of that decision-making process.
What other advice do I have?
Providing API connections to your bug database and any other database that you use, can give you updates and links inside of a channel, which is a huge help.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
Tech blogger at Blogospedia
Good content management with named channel capability to focus projects
Pros and Cons
- "Slack is a powerpack bundle of features that help small or large organizations to handle teams and their tasks."
- "I would like to see the social sharing of blogs, announcements, or other news directly from the message corner."
What is our primary use case?
I use Slack to communicate mainly for content related tasks with clients as they find it easy and quick to keep track of all of the on-going projects. Most importantly, it helped me to communicate with other content writers whenever I have to work in a team for a particular content project.
How has it helped my organization?
Earlier, while we used to communicate through email, it was good but it became difficult to keep track of all the projects and keep ourselves updated with the latest changes. Since we started using Slack, we have been able to solve each other's problems and identify all of the loopholes within a reasonable timeline.
What is most valuable?
Slack is a powerpack bundle of features that help small or large organizations to handle teams and their tasks. Personally, I love the feature that gives you the ability to name a channel as per task and include/exclude members within that channel to eradicate all other disturbances.
What needs improvement?
According to my observation, a large size file sharing feature is what can be expected, which will centralize all activities within Slack and that can save a lot of time.
I would like to see the social sharing of blogs, announcements, or other news directly from the message corner.
For how long have I used the solution?
I have been using this solution for three years.
Disclosure: I am a real user, and this review is based on my own experience and opinions.
SRO Development Manager at a computer software company with 201-500 employees
Channels enable us to manage by locations and subjects, works well on mobile
How has it helped my organization?
We are able to manage various channels by different locations and subjects, and it integrates with Google Drive.
What is most valuable?
- Channels
- File sharing
- Works well on mobile
What needs improvement?
Notifications.
For how long have I used the solution?
Less than one year.
What do I think about the stability of the solution?
No stability issues, works perfectly.
What do I think about the scalability of the solution?
I haven't notice any scalability issues.
How are customer service and technical support?
Tried to find information about advance settings for notifications, but did not find what I was looking for.
Which solution did I use previously and why did I switch?
We used Skype. We switched because our parent company uses Slack, and we had to adjust.
How was the initial setup?
Pretty straightforward.
What's my experience with pricing, setup cost, and licensing?
I am not dealing with pricing and licensing, so I cannot comment.
What other advice do I have?
Initially I thought it cannot be better than Skype, but after working with it for a while I can definitely confirm it is a great tool for collaboration.
Disclosure: I am a real user, and this review is based on my own experience and opinions.

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Moving to Slack from different communication tool changed our development team productivity 100% for better. And it is not only about specific teams, but it is also just a great way to communicate across all business globally. I personally love all the automation capabilities and integration with other tools, which makes your life easy and keep you up-to-day with all important things which going on.