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Slack Business Instant Messaging Software logo
Slack
4.5
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Slack Reviews: 4.5/5 — Highly Rated

Slack Overview
What is Slack?

Slack is the top choice for teams to communicate. It provides a virtual workspace that helps teams maintain open communication in a business environment. With Slack, users can host voice and video calls with up to 15 participants and even screen share with a desktop app, empowering better user interaction. Slack also supports options for private and group sessions, and one of its best features is Slack Huddles–an informal meeting space that lets you directly talk to your channel where you can share screen side by side with your team. The platform integrates well with Dropbox, Google Drive, and Trello as well.

Company Salesforce
Year founded 1999
Company size 10,001+ employees
Headquarters San Francisco, California
Social Media
Managed by:
AG
Axel Grubba
Founder
Slack Categories on Findstack
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Crevio
Sponsored
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(1)
Free plan available
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Ask Questions about Slack
What Slack is best for?
How does Slack compare to Zoho Cliq?
What are the pros and cons of Slack?
Slack Product Details
Capabilities
API
Segment
Small Business
Mid Market
Enterprise
Deployment Cloud / SaaS / Web-Based, Desktop Mac, Desktop Windows, Mobile Android, Mobile iPad, Mobile iPhone
Training Documentation
Languages English
Slack Pros and Cons
Pros
  • Allows users to access handy productivity tools.
  • Offers app integrations and API access
  • Comes with extensive security.
  • Lets users collaborate file sharing and video meetings
  • API allows software developers to create custom integrations
Cons
  • No course creation
  • Limited engagement options
  • Notification frequency is too high
  • Screen sharing and drawing tools aren’t supported on mobile devices
Slack Features
Admin Controls
API Access
Audit Logs
Bots and Automation
Calendar Integration
Contact Management
Customizable Notifications
Data Export
Desktop Access
Emoji Support
End-to-End Encryption
File Sharing
Slack Media
Slack - Slack Homepage
Slack Screenshots
Slack Homepage
Slack Homepage
Disclaimer
Our research is curated from diverse authoritative sources and meant to offer general advice. We don’t guarantee that our suggestions will work best for each use-case, so consider your unique needs when choosing products and services. Feel free to share your feedback.
Last updated: September 27, 2026
Slack Business Instant Messaging Software logo
28,674 Slack Reviews
4.5 out of 5
Mid Market (51-1000 emp.)
Jan 05, 2023
 Source
Overall Rating:
5.0
DC
Daniel C.
Lead Repair Manager
Share
"Perfect in house Communications"
What do you like best about Slack?

Our team is very responsive now because of this. We can @channel @here @(name) and things get done!

What do you dislike about Slack?

I would like more noise options, louder noise too. I work in a warehouse - so it's hard to hear at times. Maybe adding some extra reminders when im on another page could help as well. This has been great so far.

What problems is Slack solving and how is that benefiting you?

Solving issues in between to departments much faster now. The response time is great! Ww e use to depend on emails or GOOGLE hangouts to get things done, but this software works that much better! Being able to create groups is a great addition.

Mid Market (51-1000 emp.)
Jan 05, 2023
 Source
Overall Rating:
5.0
AS
Anthony S.
Operations Manager
Share
"Quick, Simple, Easy & Customizable!"
What do you like best about Slack?

The ability to create channels specific to a task and include the necessary parties.

What do you dislike about Slack?

When searching for something specific through a channel, it will not come up under the search though it is typed in correctly.

What problems is Slack solving and how is that benefiting you?

Ease of communication

Enterprise (> 1000 emp.)
Jan 05, 2023
 Source
Overall Rating:
5.0
Megann M. avatar
Megann M.
Certified Expert
Share
"Slack- Intuitive & Helpful "
What do you like best about Slack?

I love that I can customize my notifications and organize my conversations into threads based on topic

What do you dislike about Slack?

Sometimes the notifications are delayed, and I have to manually check.

What problems is Slack solving and how is that benefiting you?

I am able to communicate quickly with a team that I work with over seas

Mid Market (51-1000 emp.)
Jan 05, 2023
 Source
Overall Rating:
5.0
AT
Ayesha T.
Ux Designer
Share
"Kiddos to the Designers making Slack Happen!"
What do you like best about Slack?

Here are a few things I love about the product: - Easy-to-Use UI - Intuitive and Humorous Language - Customizations - It doesn't feel robotic or cluttered. - The best thing about Slack is the Human Touch. There is always a small moment of joy within the product, which makes you automatically fall in love with it and look forward to the next interaction.

What do you dislike about Slack?

- It can be hard to find people in the sidebar. - I can never tell how to create a multiple-people group chat. - When you're in the huddle, it is impossible to get out of full-screen mode. - Sometimes, I can't tell that I got a new message if I missed a notification.

What problems is Slack solving and how is that benefiting you?

It helps our company connect with everyone quickly and in a fun way. I can send pictures, pdf, or any attachments. I can send voice messages or talk to them in huddles. I can link threads within Slack which makes it easier for us to make quick decisions.

Mid Market (51-1000 emp.)
Jan 03, 2023
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Slack has been an easy way to connect with colleagues in the remote space"
What do you like best about Slack?

I like the ability to chat with anyone in our company. The different private channels and the ability to schedule messages. I also love being able to have less formal conversations as if I were in the office with my colleagues with cute emojis or giphys

What do you dislike about Slack?

The only thing I dislike about Slack is that there's not automated response for when I am out or when an employee is out of office. I can put a status and silence my notifications, but that doesn't help the recipient know that I won't be able to answer and to ask someone else on the team.

What problems is Slack solving and how is that benefiting you?

It's not filling up my email with small questions that could have usually been answered by going up to someone. It's also helped with being able to get quick answers from those who have the answers.

Mid Market (51-1000 emp.)
Jan 03, 2023
 Source
Overall Rating:
5.0
Paul K. avatar
Paul K.
Contract Analyst
Share
"Better, Faster Company Communication"
What do you like best about Slack?

It is so easy to communicate things we used to share via email through Slack. My inbox is always emptied by the end of the because I am no longer inundated with internal emails.

What do you dislike about Slack?

When your site has many channels, things can get messy. It would be nice to be able to organize the channels better. Searching through the site could be more accessible as well.

What problems is Slack solving and how is that benefiting you?

Communications issues. I am much more efficient in communicating with my colleagues and feel better about reaching out to managers and higher-ups because I can see their statuses.

Small Business (50 or fewer emp.)
Jan 03, 2023
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Best messaging app"
What do you like best about Slack?

Integrates with many other collaboration and office tools

What do you dislike about Slack?

Audio and video call quality need improvements

What problems is Slack solving and how is that benefiting you?

Slack is an excellent and powerful team messaging app with a rich collection of settings and options

Small Business (50 or fewer emp.)
Jan 03, 2023
 Source
Overall Rating:
5.0
VC
Valay C.
Senior Account Executive
Share
"Improve your team communication and productivity"
What do you like best about Slack?

I like that in slack, everything is at one place. Communication with your team members, channels for notifications, file share/search and integration with all the tools you use for work.

What do you dislike about Slack?

Don't dislike anything. The desktop app can be optimise a little for better performance. It works well but sometimes there is a slight lag.

What problems is Slack solving and how is that benefiting you?

Slack help in streamline the communication between team members for productivity. One can share files/code anything. Slack also has integration with every other tool, I suppose which helps in getting quick notification and data.

Small Business (50 or fewer emp.)
Jan 01, 2023
 Source
Overall Rating:
5.0
Meleso B. avatar
Meleso B.
Social Media Manager
Share
"Best Platform to Connect with Colleagues as a Virtual Assistant"
What do you like best about Slack?

It is a great and easy way to communicate with clients and colleagues.

What do you dislike about Slack?

Interfaces are alike sometimes I mistakenly send messages to other people.

What problems is Slack solving and how is that benefiting you?

Communicating with my colleagues is easier and more organized.

Mid Market (51-1000 emp.)
Dec 30, 2022
 Source
Overall Rating:
5.0
DP
David P.
Site Reliability Engineer
Share
"Instant communication and DMs made simple."
What do you like best about Slack?

The features for messages are the best, Reply in Thread, Share Message, Save Item, Reminders, and the capability of viewing threads without losing sight of your current chat. Handy functionality.

What do you dislike about Slack?

Despite having a powerful Search functionality, I would love to have a predefined tab for Links previously shared just like the one for Files.

What problems is Slack solving and how is that benefiting you?

Communication within the team via message or a huddle is effortless. The biggest problem helping us solve is communication outside our organization, it provides quick and easy Connections with our multiple customers.

Mid Market (51-1000 emp.)
Dec 30, 2022
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"One of the best experiences with messaging apps for workspaces!!"
What do you like best about Slack?

Super fast UI, the collaboration tools at the user's disposal are best on the field, and being able to quickly share via text, audio, video, and file sharing with a single-button interaction is amazing. Also webhook capabilities are amazing.

What do you dislike about Slack?

Looking for historical data inside channels may take a toll on some CPUs, the functionality is there, but it may result in a slower experience than expected. It is a small quirk for otherwise a great experience.

What problems is Slack solving and how is that benefiting you?

Being able to communicate easily across different teams inside a shared workspace, creating channels to easily maintain updates and follow-ups depending on the company's upcoming tasks.

Mid Market (51-1000 emp.)
Dec 29, 2022
 Source
Overall Rating:
5.0
VH
Valeria H.
Director
Share
"Perfect for work commnication"
What do you like best about Slack?

It's very easy to use for people of any age group! you can find or communicate quicker with coworkers from all over the world. I work with people from all timezones so one of my favorite slack features is that it tells me what time is it for the other person so I can be mindful of their schedule (You can also easily turn off notifs for an established amount of time to get proper sleep). Slack feels friendlier than sending all info through email and it's easier to see replies or them off (we all know how annoying email can get with people that do not understand how to use it). I believe this is particular to my company but slack had made bonding way easier, we have channels for everything work-related but we also have channels like #gym or #game-nights where we get to talk with people we wouldn't necessarily talk otherwise; This has definitely helped the overall engagement since we feel a strong sense of connection with others in the company.

What do you dislike about Slack?

Slack has both a mobile and desktop version but the mobile version is still somewhat lacking. Sometimes (only in the mobile version) the message you thought you sent doesn't send and you have to write it again and you can't change things in your profile like what you do and your name.

What problems is Slack solving and how is that benefiting you?

Communication is way smoother. Instead of just using email, I can always talk with coworkers in a less formal way. I can see general announcements at work channels and easily text my coworkers through slack DMs that look like any other app DMs but we don't have to share our social media accounts Instagram or Facebook or exchange numbers.

Small Business (50 or fewer emp.)
Dec 29, 2022
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Great product"
What do you like best about Slack?

Slack is a fantastic tool for work communications. I like the easy group calling and file-sharing features. It helps my company stay in touch. Slack's advanced integrations such as SSO and chatbots are also great.

What do you dislike about Slack?

I don't like the new huddles feature. I miss the old calling feature. I can't take huddles off of speaker phone while on slack for the Android client. Most of the time, I opt to use the old calling function.

What problems is Slack solving and how is that benefiting you?

Slack helps us stay in touch with one another. It also helps us stay informed about how our infrastructure is doing. We're definitely more productive because of Slack.

Small Business (50 or fewer emp.)
Dec 28, 2022
 Source
Overall Rating:
5.0
AR
Aline R.
Hr Manager
Share
"The most complete and easy communication software for your team!"
What do you like best about Slack?

The amount of apps and integrations possibilities. We can integrate sofwares and plataforms that we use in Slack wich made so much easier to work. Besides that, I can work in the environment of the company because the Trivia's apps are also incredible.

What do you dislike about Slack?

To be honest, nothing....Everything works well for us.

What problems is Slack solving and how is that benefiting you?

Slack are always inovating in the visual, wich i appreciate.

Enterprise (> 1000 emp.)
Dec 26, 2022
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Slack is an ultimate team messaging app"
What do you like best about Slack?

I have been using slack for the past nine months, and the environment looks user-friendly. The most exciting feature of this application is integrating different apps to get notifications quickly, like google calendar.

What do you dislike about Slack?

Till now, there is only one thing I don't like: the huddle, which has problems when we communicate with our teammates or someone from our organization. We cannot zoom in on the content they are sharing, and we also have a problem with the voice, as it breaks even though the internet is working correctly. Also, there is a problem with the background noise while using headphones.

What problems is Slack solving and how is that benefiting you?

It helps us get in touch with our teammates quickly and also gives us notification of meetings to which we are invited. If our teammate is on leave or has snoozed the notification on Slack, there is an option to notify them anyway, which sends the information to their Gmail.

Small Business (50 or fewer emp.)
Dec 25, 2022
 Source
Overall Rating:
5.0
Asjad R. avatar
Asjad R.
Business Administration Manager
Share
"Makes work easy"
What do you like best about Slack?

Slack is the perfect platform to use at work, making communication easier. One of the best features is the Channel system, where it is easy to compartmentalize things and even pin as many important messages.

What do you dislike about Slack?

Sometimes integrating apps is a bit of a hassle, partly due to not every single app being available.

What problems is Slack solving and how is that benefiting you?

Slack is making communication at work easy, especially department-wise. It is benefitting my business as it is easy to find all the related information in one place

Mid Market (51-1000 emp.)
Dec 23, 2022
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Great for collaboration and async work"
What do you like best about Slack?

Slack makes it very easy to connect and refer back to past conversations in a clear way.

What do you dislike about Slack?

Slack can get overwhelming at times with a bit of information overload. I find it very important to utilize muting channels for this purpose.

What problems is Slack solving and how is that benefiting you?

Async communication across international teams.

Enterprise (> 1000 emp.)
Dec 23, 2022
 Source
Overall Rating:
5.0
Martin A. avatar
Martin A.
Senior Technical Program Manager
Share
"#1 Messaging App for Collaborating with Co-workers!"
What do you like best about Slack?

UI. Easy to pop between channels and direct messages

What do you dislike about Slack?

No way to disable @here or @channel for a specific channel

What problems is Slack solving and how is that benefiting you?

Work collaboration, especially with people located in different cities across the world

Small Business (50 or fewer emp.)
Dec 22, 2022
 Source
Overall Rating:
5.0
Charlese L. avatar
Charlese L.
Ceo And Freelance Copywriter
Share
"I LOVE Slack!"
What do you like best about Slack?

This is the best way to communicate with people inside and outside of my business. We share files and can always find them right where we sent them. I love the huddle feature to jump on a quick call with a colleague.

What do you dislike about Slack?

Sometimes the notifications don't show and you can miss a communication. I haven't figured out how to improve this.

What problems is Slack solving and how is that benefiting you?

I can work anywhere with anyone who is also anywhere around the world. This stops the need for email threads that get lost... all your communications stay in one place.

Small Business (50 or fewer emp.)
Dec 21, 2022
 Source
Overall Rating:
5.0
Olha B. avatar
Olha B.
Marketing Specialisit
Share
"#1 Collaboration tool for teams"
What do you like best about Slack?

Probably the easiest file/screen sharing tool for teams. Human adopted slackbots inside. Thanks for supporting Ukraine!

What do you dislike about Slack?

Can`t think of anything else for business communication

What problems is Slack solving and how is that benefiting you?

Everyday connection for teammates, fast call connections and file/screen sharing, updated UI/UX

Enterprise (> 1000 emp.)
Dec 21, 2022
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Highly Recommend"
What do you like best about Slack?

I love the flexibility of being able to use both direct messages and channels. This provides convenient ways to organize my team's communication.

What do you dislike about Slack?

I hope that Slack takes the time to increase the limit of recipients for DM chats.

What problems is Slack solving and how is that benefiting you?

We needed a better platform to reach our team efficiently and quickly. This platform does all of it.

Small Business (50 or fewer emp.)
Dec 21, 2022
 Source
Overall Rating:
5.0
BA
Belle A.
Project Manager
Share
"Efficiency"
What do you like best about Slack?

It's perfect for internal communication - may it be via chat or video calls

What do you dislike about Slack?

I can't think of anything that I dislike about it

What problems is Slack solving and how is that benefiting you?

Communication with the team and even with the clients all in one place - Slack

Mid Market (51-1000 emp.)
Dec 20, 2022
 Source
Overall Rating:
5.0
GP
Gini P.
H
Share
"Must-Have Tool for Any Business!"
What do you like best about Slack?

It's user-friendly and can be used in small and big environments. In addition, being able to integrate with so many other tools makes it a must-have tool to have in your org.

What do you dislike about Slack?

It can be overwhelming if there are too many channels/chats within your org's Slack. It's important that admins monitor this and help reduce inactive and redundant channels.

What problems is Slack solving and how is that benefiting you?

Slack has allowed us to leave our email for conversations outside our organization and keep one-off convos within Slack. It's been beneficial post-Covid when many of our team members are remote. It's much easier (and preferred) to send a quick message or connect on a hub instead of scheduling a call/meeting.

Small Business (50 or fewer emp.)
Dec 20, 2022
 Source
Overall Rating:
5.0
ER
Ema R.
Support Lead
Share
"Best messaging system"
What do you like best about Slack?

The user interface - it´s user friendly, easy to use and fun.

What do you dislike about Slack?

The huddles could be improved - it would be great to integrate calls fully in Slack

What problems is Slack solving and how is that benefiting you?

Communicating with my team fast, the fact that it is mobile.

Mid Market (51-1000 emp.)
Dec 20, 2022
 Source
Overall Rating:
5.0
AG
Verified Reviewer
Founder
Share
"Great async communication tool"
What do you like best about Slack?

It's engaging, fun, and easy to use! Our remote culture wouldn't be what it is today without Slack.

What do you dislike about Slack?

Communication can get lost. Notifications are a bit buggy sometimes.

What problems is Slack solving and how is that benefiting you?

It prevents us from sending thousands of emails a week.

Mid Market (51-1000 emp.)
Dec 20, 2022
 Source
Overall Rating:
5.0
AD
Alisa D.
Workplace Coordinator
Share
"Alisa Daniley's SLACK Review"
What do you like best about Slack?

You can engage employees and get feedback about workplace operations. It also help staff to communicate effectively.

What do you dislike about Slack?

I have not figured out how to add sound to messages or turn the sound on my notifications.

What problems is Slack solving and how is that benefiting you?

Slack is solving issues that come from poor communication or lack of communication. It benefits me by keeping me in touch with my staff.

Small Business (50 or fewer emp.)
Dec 19, 2022
 Source
Overall Rating:
5.0
PC
Pedro C.
Sales Development Representative
Share
"Great place to communicate with work colleagues"
What do you like best about Slack?

The integrations pleasure me a lot, besides the easily made channels

What do you dislike about Slack?

The mobile app is awful, I couldn't even log in

What problems is Slack solving and how is that benefiting you?

The problem with the communication for whatsapp that is usual in companies

Enterprise (> 1000 emp.)
Dec 19, 2022
 Source
Overall Rating:
5.0
LC
Leidy Johana C.
Quality Control Analyst
Share
"An amazing interacting and communication tool"
What do you like best about Slack?

Communication with colleagues is very simple and fast, I like also the different channels that we can create or belong to and apart from chatting we can make calls or video calls with good quality, and interaction becomes fun!

What do you dislike about Slack?

The session close constantly, at least in the desktop app

What problems is Slack solving and how is that benefiting you?

Communication into the organization

Small Business (50 or fewer emp.)
Dec 19, 2022
 Source
Overall Rating:
5.0
BN
Boss N.
Marketing Operations Support
Share
"Slack awesome app remote teams"
What do you like best about Slack?

We can communicate with our team in Europe and it's great for collaboration

What do you dislike about Slack?

Nothing, it's an awesome app/software that is necessary for remote teams

What problems is Slack solving and how is that benefiting you?

Communication and collaboration with a remote team in Europe as some so of the team is in South Africa

Small Business (50 or fewer emp.)
Dec 16, 2022
 Source
Overall Rating:
5.0
SO
Sara O.
Head Of Business
Share
"Best team comunication"
What do you like best about Slack?

Theres nothing you cant do with slack. You can organize all the comunication with you team, have chanels with your clientes outside of organization, program messages, use the filter to find an old message, remember you of a message later, so many funcionality. Every day i discovere a new one.

What do you dislike about Slack?

I don't have anything to complain about slack. It attends all of our demands and much more. When i don't know something, the support gives me all the assistance!

What problems is Slack solving and how is that benefiting you?

Our team comunication. We many clients, and with slack we can separate the clients by channel and topics, also the responsible persons for which. It allowed us to have asynchronous communication.