Who Uses This Software?

Our customers range from two-person startups to Fortune 100 corporations. In fact, 77% of the Fortune 100 uses Slack.

Average Ratings

15 656 reviews
  • Overall 4.5 / 5
  • Ease of Use 4.5 / 5
  • Customer Service 4.5 / 5
  • Features 4.5 / 5
  • Value for Money 4.5 / 5

Product Details

  • Starting Price US$6,67/month
  • Free Version Yes
  • Free Trial Yes
  • Deployment Installed - Mac
    Cloud, SaaS, Web
    Installed - Windows
    Mobile - iOS Native
    Mobile - Android Native
  • Training In Person
    Live Online
    Documentation
  • Support Online

Vendor Details

  • Slack
  • https://slack.com
  • Founded 2014

About Slack

Slack is a collaboration hub, where the right people and the right information come together, helping everyone get work done.

When your team needs to kick off a project, hire a new employee, deploy some code, review a sales contract, finalize next year's budget, measure an A/B test, plan your next office opening, and more, Slack has you covered.

Try Slack with your team for free.

Slack Features

  • Agile Methodologies
  • Budget Management
  • Client Portal
  • Collaboration Tools
  • Cost-to-Completion Tracking
  • Customizable Templates
  • Gantt Charts
  • Idea Management
  • Kanban Board
  • Milestone Tracking
  • Portfolio Management
  • Resource Management
  • Time & Expense Tracking
  • Traditional Methodologies
  • Activity/News Feed
  • Calendar Management
  • Chat / Messaging
  • Discussion Threads
  • File Sharing
  • Push Notifications
  • Search
  • Surveys & Feedback
  • Task Management
  • Video Conferencing
  • Audio / Video Conferencing
  • Calendar Management
  • Call Recording
  • Call Routing
  • Chat / Messaging
  • Fax Management
  • File Sharing
  • Mobile Access
  • Multi-User Collaboration
  • Voice Mail

Slack Most Helpful Reviews

Google Hangouts Replacement, Saved us from Teams

Reviewed on 2019/09/12
Verified Reviewer
Owner
Information Technology & Services, 2-10 Employees
Used the Software for: 6-12 months
Reviewer Source 
5/5
Overall
4 / 5
Ease of Use
4 / 5
Features & Functionality
Customer Support
4 / 5
Value for Money
Likelihood to Recommend:
Not Likely Extremely Likely

Comments: I actually enjoy Slack. It is fun to use, and I like much more than sending an email.

Pros: Slack really allows us to communicate effectively based on group or subject. We can communicate directly in the General chat, directly, or in any number of specialized group channels. Each team has their own channel, and if needed, that channel can be locked to prevent other teams from entering. Most are open channels that allow for any of our teams to come in and converse on the subject titled. One our favorite things to use are external apps. I love that Slack will pop up an upcoming appointment or if we need a meeting in say Zoom, I can just type /zoom and it will generate a Zoom link and we can all join in. We are on the free tier, so with the higher level tier, you can get conferencing and a wealth of other features added in. The free level serves us very well. We use email integration also, so important emails and even things like weather alerts pop up as a Slack notification. It is really a great service.

Cons: Can be confusing to use if you are not used to chat systems such as Hangouts or WhatsApp though. The idea of a separate room, or Group chat, confuses some, but once they see how things work, it is a non-issue.

free instant messaging for small businesses

Reviewed on 2019/09/09
Olivia B.
SRE
Market Research, 13-50 Employees
Used the Software for: 6-12 months
Reviewer Source 
4/5
Overall
4 / 5
Ease of Use
4 / 5
Features & Functionality
Customer Support
5 / 5
Value for Money
Likelihood to Recommend:
Not Likely Extremely Likely

Comments: a great free/paid, GDPR compliant option for company instant messaging

Pros: Slack offers free versions of it's software which were suitable for our business and therefore saved us money versus competitor instant messaging products. Slack is also GDPR complaint so ticked our boxes in terms of what we needed. The interface is also simple to use and intuitive, as well as not being too cluttered. It offers both group chats, company wide groups and personal chats. Slack also has great integration possibilities with other apps such as dropbox, or client relationship managers, which is useful for sharing information. it also allows you to create polls and share gifs etc, and has clear pop up notifications and email updates.

Cons: -limited naming allowances for channels (e.g. no spaces end no capital letters) which can make it hard to think of obvious names for some groups
-the gif insertion is a strange system, (have to type /giphy [text] and then it will give you one suggestion of a gif and you have to shuffle if you want a different picture, rather than being able to choose)
-the way of responding to a certain message and creating a new chain can be complex to some in the team

Good tool for connecting remote employees

Reviewed on 2019/08/30
Vanessa J.
Quality Assurance
Health, Wellness & Fitness, 10 001+ Employees
Used the Software for: 2+ years
Reviewer Source 
4/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
Customer Support
Value for Money
Likelihood to Recommend:
Not Likely Extremely Likely

Comments: Overall, we use this tool as a team all day long and it works well for what we need. On occasion it "glitches," but that is rare.

Pros: Slack is easy to use, it is easy to chat in a group, set up special channels and have private chats. It does have a calling feature, with share-screen ability. I especially like that you can mute or change the sound features of each channel or group, and that you can pause all notifications for a period of time. It's easy to see when team members are on and available to talk, which is important as we have an all remote team.
Service is great with a Slack help feature that allows you to ask questions and get immediate help from Slackbot. Polly is a great tool for polling, very easy to use.

Cons: Slack can be glitchy at times, rarely, but it is irritating. It will show as if I am not on when I am. Other times I will miss comments because it just didn't notify me. This is not just me, but the entire team will have these issues on occasion. Again, it's rare, and a simple log out and back in are all that's needed to get it working again.
The calling feature is great in many ways, but there are times when the quality is not the greatest and we get disconnected. Again, rare; and it might not even be a Slack issue - maybe internet glitches?

Slack is our go-to quick communication tool for our remote team

Reviewed on 2019/08/28
Eileen moran C.
Marketing and Operations Manager
Marketing & Advertising, 2-10 Employees
Used the Software for: 2+ years
Reviewer Source 
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
Customer Support
5 / 5
Value for Money
Likelihood to Recommend:
Not Likely Extremely Likely

Comments: Before using Slack, we had to wait for people to answer emails or use text messages or chat apps. None of it was organized into a company-wide system where you can have multiple conversations with different people. Slack is the perfect solution for quick communication that doesn't need to be saved forever.

Pros: Slack is very simple to set up and use and allows us to quickly message our team members who all work remotely. It's a great tool for sharing links, getting answers to simple questions, and also sharing fun things in the Random and General Channels. We've got a few different Channels we use with our 21 users who are a combination of employees and contractors. We also use Google Drive, so that is integrated into Slack.

Cons: We've got the free plan, so we have messages that are now archived that we can't access. Considering it's free, it's not much of a con.

The BEST tool for interoffice communication and filesharing

Reviewed on 2019/08/24
Erik M.
Graphic Designer
Security & Investigations, 13-50 Employees
Used the Software for: 2+ years
Reviewer Source 
5/5
Overall
5 / 5
Ease of Use
5 / 5
Features & Functionality
5 / 5
Customer Support
5 / 5
Value for Money
Likelihood to Recommend:
Not Likely Extremely Likely

Comments: Slack has improved my team communication and collaboration exponentially. I can't say enough good things about the developers and the incredible tool they have built. Every time I interact with the interface I am amazed at the ease of use. Slack has also never crashed on me - not once.

Pros: Slack is so robust. You can send files, GIFS, video, have team video calls and create channels for your team to chat together. When sharing links, there is an option to display rich content previews, and you can even make your own emojis. The customization is endless. It is incredibly powerful even as a free version. Once I unlocked the paid version, having access to all of my archived files just took it to the next level. I highly recommend Slack for any size team and have used it for about 4 years.

Cons: I have no complaints about Slack. I believe their pay-gate in the free version restricting access to files past a certain time period is completely fair, and the support and interface they offer is unlike any other. Being able to search back in chats for exactly the file or conversation someone referenced without having to bother them again for the details.

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