What Is 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.

Who Uses Slack?

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

Where can Slack be deployed?

Cloud, SaaS, Web-based, Mac (Desktop), Windows (Desktop), Android (Mobile), iPhone (Mobile), iPad (Mobile)

About the vendor

  • Slack
  • Located in San Francisco, US
  • Founded in 2014
  • Chat

Countries available

Australia, Brazil, Canada, China, France and 6 others

Languages

English, French, German, Japanese, Spanish

About the vendor

  • Slack
  • Located in San Francisco, US
  • Founded in 2014
  • Chat

Countries available

Australia, Brazil, Canada, China, France and 6 others

Languages

English, French, German, Japanese, Spanish

Slack videos and images

Slack Software - Slack channels
Slack Software - Slack file sharing
Slack Software - Slack search tools
Slack Software - Slack task creations
Slack Software - Slack video/audio calls
View 6 more
Slack video
Slack Software - Slack channels
Slack Software - Slack file sharing
Slack Software - Slack search tools
Slack Software - Slack task creations
Slack Software - Slack video/audio calls

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Features of Slack

  • Access Controls/Permissions
  • Activity Tracking
  • Activity/News Feed
  • Alerts/Notifications
  • Audio Calls
  • Billing & Invoicing
  • Brainstorming
  • Budget Management
  • Calendar Management
  • Call Conferencing
  • Call Routing
  • Chat/Messaging
  • Collaboration Tools
  • Commenting/Notes
  • Communication Management
  • Communications Management
  • Discussions / Forums
  • Document Management Software
  • File Sharing Software
  • For Sales Teams/Organizations
  • Group Management
  • In-App Training
  • Live Chat Software
  • Meeting Management
  • Member Directory
  • Messaging
  • Mobile Access
  • Multi-User Collaboration
  • Notes Management
  • Onboarding Software
  • Percent-Complete Tracking
  • Presentation Streaming
  • Project Management Software
  • Project Planning/Scheduling
  • Real Time Notifications
  • Real Time Synchronization
  • Real-Time Chat
  • Remote Access/Control
  • Remote Support Software
  • Reporting/Project Tracking
  • SSL Security
  • Screen Sharing Software
  • Search/Filter
  • Single Sign On Software
  • Surveys & Feedback
  • Task Management Software
  • Third Party Integrations
  • Time & Expense Tracking
  • Two Way Audio & Video
  • Two-Way Audio & Video
  • Usage Tracking/Analytics
  • Video Chat
  • Video Conferencing Software
  • Workflow Management Software

Slack Alternatives

Cloud-based platform that helps businesses facilitate operations via a suite of communication and productivity applications.
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Zoom Meetings are easy, reliable, and secure, providing HD video, audio, and content sharing across a multitude of systems.
Cloud-based messaging application that provides media exchange, data encryption, photo editing, and more.
Open source team communication platform that provides organizations with messaging and file-sharing tools for web, PCs, and mobiles.
Revolutionize internal communications by bringing together all employees inside a private and secure enterprise social network.
Web conferencing tool that helps businesses streamline collaboration via instant messaging, voice/video calls, or group conversations.
A suite of collaboration products for teams and SMBs. Web conferencing, file sharing, and scheduling in the cloud. Formerly G Suite.
Rocket.Chat brings data protection into every conversation.
Web conferencing tool that helps businesses with instant messaging, voice & video calls, voice messaging, desktop sharing, conferencing
Dialogue management tool that lets businesses engage with customers across communication channels, keeping record of past conversations
Webex brings together Calling, Meeting and Messaging modes of collaboration into a seamless, inclusive and intelligent experience.
Cliq will help you communicate, collaborate and reach consensus without any hassles. Catch up with your team no matter where you are.

Reviews of Slack

Average score

Overall
4.7
Ease of Use
4.6
Customer Service
4.4
Features
4.5
Value for Money
4.5

Reviews by company size (employees)

  • <50
  • 51-200
  • 201-1,000
  • >1,001
Elena alexandra M.
Elena alexandra M.
Recruiter in Romania
Verified LinkedIn User
Computer Games, 51-200 Employees
Used the Software for: 2+ years
Reviewer Source

The best team comunication tool

5 2 months ago New

Comments: We use it daily to communicate, organize our work, coordinate activities, share important messages or company announcements.

Pros:

You can not only send direct messages to one or many team members, but you can also create communication channels for different topics. You can send gif and react to messages, you can share files, or even jump in a call.

Cons:

You can jump in a call it needed, but sometimes this feature doesn't work.

Cam M.
Sr. Director in US
Sports, 11-50 Employees
Used the Software for: 2+ years
Reviewer Source

Alternatives Considered:

Work w/ Slack is better

5 2 weeks ago New

Comments: It's a great platform to increase productivity and accountability while serving as the means of communications for our remote-only company

Pros:

The real-time features of being able to communicate effortlessly with teammates, co-workers

Cons:

Not much -- sometimes it doesn't sync directly from phone to computer or vice versa -- but that's user error, likely.

Kevin B.
Software Engineer in US
Financial Services Software, 1,001-5,000 Employees
Used the Software for: 2+ years
Reviewer Source

Nice ideas with issues

3 3 weeks ago New

Comments: The idea of slack is great, and it helps my team communicate more quickly and effectively than something like Google Hangouts. However, with the introduction of Huddles, and seemingly with the purchase of Slack by Salesforce, there seems to be a lot more bugs than in previous versions of the sofware.

Pros:

Slack is very easy to keep in the background and to use on your mobile device. The best feature of slack is the ability for everyone on a call to draw on the presenter's screen without any setup. Its very easy to onboard a new user and have them communicating right away. The API makes Slack a great hub for reminders and system notifications.

Cons:

Over the past year or so, Slack seems to be getting a little buggy. There are regular problems with joining Huddles, getting kicked out of huddles for drawing when a presenter has drawing enabled, and getting audio to consistently work. My team has noticed problems on Windows and iOS.

Elaine K.
CEO in UK
Computer Software, 2-10 Employees
Used the Software for: 6-12 months
Reviewer Source

Great for teams in multiple locations

5 2 months ago

Comments: Overall I really like slack and I admit now is the time to explore what else it can do. That being said, given how I use it I do feel confident in recommending slack for people who are looking for a way to communicate better with their team.

Pros:

love slack because it helps me communicate with my team better. We are all located in different parts of the world and I haven't met many of them. The message style function makes it feel lighter than email, and I feel connected. As a freelancer I also have multiple teams and channels on slack but they never get jumbled or mixed together, so that provides even more security.

Cons:

The downsides of slack in my opinion is that despite the search being great, it can be hard to keep track of everything that is going on in a large team, especially with multiple threads and streams, and you can easily miss something important. Thsi could be more of a company issue than a Slack one! Additionally, if you are not careful, Slack can become a huge time sink. Overall, though, I think the benefits of using Slack outweigh the drawbacks. If you are looking for a way to improve communication

Verified Reviewer
Director in US
Verified LinkedIn User
Government Administration, 2-10 Employees
Used the Software for: 6-12 months
Reviewer Source
Source: GetApp

Alternatives Considered:

Slack for Collaboration

5 2 months ago New

Comments: We started using Slack as a way of communicating with each other and as a way of sharing materials easily. It does all those things and more and we love it.

Pros:

We use Slack for a number of things. We love that it has a very nice in house messaging system that keeps us all on the same page rather well. We use it's file sharing feature all the time as well. The channels make it easy to post relevant information to different topics and have real time collaborative feedback on those projects that are relevant to my team members who are on those projects without clogging up the inboxes of other team members who aren't.

Cons:

So far, we haven't found much that we don't like. It would be nice if there was a few more options, perhaps, that allowed for personalizing fonts or styles when writing to do lists or posts for yourself, but it isn't a major hangup.