Slack brings team communication and collaboration into one place so you can get more work done, whether you belong to a large enterprise or a small business. Check off your to-do list and move your projects forward by bringing the right people, conversations, tools, and information you need together. Slack is available on any device, so you can find and access your team and your work, whether you’re at your desk or on the go.

Use Slack to:
• Communicate with your team and organize your conversations by topics, projects, or anything else that matters to your work
• Message or call any person or group within your team
• Share and edit documents and collaborate with the right people all in Slack
• Integrate into your workflow, the tools and services you already use including Google Drive, Salesforce, Dropbox, Asana, Twitter, Zendesk, and more
• Easily search a central knowledge base that automatically indexes and archives your team’s past conversations and files
• Customize your notifications so you stay focused on what matters

Scientifically proven (or at least rumored) to make your working life simpler, more pleasant, and more productive. We hope you’ll give Slack a try.

Stop by and learn more at:

What's New

Version 3.1.0

What's New
- We’re using a new font for Japanese. It’s clearer, more legible, and goes well with aubergine. (Which is the default color of your sidebar. As well as a vegetable.)
- Sometimes Slack takes too long to start up. If that happens, a) we’re sorry that it does, but b) you’ll now see a link with some helpful troubleshooting ideas.
- When a file’s done downloading, a new notification will dutifully let you know.
- If you’ve asked Slack to launch right when your computer turns on, Slack now does so much more quietly — with less extraneous loading screen action, and fewer fanfares.

- Badges about unread messages would linger on the dock icon, even after said messages had been read. These badges will linger no more.
- Slack would occasionally crash when it wasn’t allowed to put files in the Temp folder. Now, it will simply use the Downloads folder, instead.
- Some users who clicked on a magic link were not taken to their workspace. We have set our cauldrons to a slow simmer and magic links should now work as expected.
- When trying to connect via a proxy, Slack no longer refuses to load.
- Sometimes, during a support conversation, we’d ask you to reset your app data with the click of a button. Clicking this button will now actually reset all the necessary data, rather than some. Which is good for everyone.
- Now you can download a file from Slack, delete it, and then download it again. If that seems like the way the Slack should’ve always worked, well, you aren’t wrong.
- Right clicking “something” and choosing “Search with Google” had a tendency to search for “so”, “me”, or “thing.” It will now search for the entire text. So if you really do want to Google “something” (or something else), we’ll have your back.
- While operating in the background, Slack would sometimes keep notifications to itself. Sharing is caring, and you should now receive notifications as normal.
If you quit Slack while the app was full screen, then started the app again, sometimes the gray bar that lets you close, minimize, and maximize the window would vanish for good. Now it doesn’t.
- Too many text substitutions in your Mac settings would cause Slack to perform poorly. You can now use text replacement to your heart’s content.
- Interacting with a notification will cause it to disappear, and not hang around indefinitely.
- When replying to a notification from the notification pop-up, the reply will now always be sent. As opposed to before, when it occasionally wasn't.
- A subtle gray border on the right edge of the window has been replaced with a subtler gray border. Subtle, one might say, to the point of invisibility. Ok, fine — we just removed it.
- If you’d previously asked Slack to download files to a folder other than Downloads, that won’t work anymore. We’re very sorry about that. The option to choose a different folder will return shortly.

Ratings and Reviews

3.4 out of 5

127 Ratings

127 Ratings

Good but could be great :)


Like this chat app a lot. Saves me a lot of time with its built-in features as well as the available integrations. Also a big fan of the styling, makes work chat less boring!

However, noticed with recent update that the "Slack Helper" processes are chugging CPU time, so much so that the fans on my top-spec Macbook Pro run on medium to high. Didn’t have this issue before so I’m sure this is an optimization they just need to make.

One thing I would LOVE to see is the ability to “sleep” a group, so that it didn’t have to be always running in the background. For someone like me, who uses Slack for 9 different groups, having each of those chats actively run leads to each spinning up a Slack Helper process that consumes a fair amount of CPU. Would love to be able to “sleep” less important chats e.g. disable background updates for those groups until I explicitly “un-sleep” it. This would primarily be used for chats of lower priority than others.

Developer Response

Interesting idea about "sleeping" a workspace! You've given us some great food for thought here— thanks for sharing this with us!

Very useful, but needs folders to organize channels

Eric R..

My team has been using Slack for about a year. We use Slack a lot and it has been incredibly helpful. However, the inability to organize channels into hierarchical folders, or even one level of folders, is a serious productivity killer. We have about 50 channels, so hunting for the right place to put information can be a hassle. We already use prefixes (e.g., dev_XXX or partner_YYY), but that isn’t a great solution, and it does little to reduce the visual and cognitive clutter. The team has been otherwise helpful with bugs we’ve encountered, but hasn’t been able to move the needle on folders. Hopefully, they will get to this important feature. Otherwise, Slack is great.

Developer Response

Thank you so much for the feedback on this. We will be sure to bring this forward for future consideration.

Great Business Communications App


Works great to create “Channels” which are ad-hoc groups that can be messaged at once. The channels can be changed or deleted when needed. The Mac app works well with notification center but a recent bug (Dec 2017) is REALLY annoying. Replies in the notification center now go nowhere. U P D A T E ! Bug squashed as of Jan 2018. Replies are acting as they should. Thanks!!! BTW Notification Center can be set to make Slack notifications persistent so you never miss a message. I can’t find a way to do that on colleagues running Windows 7. Also its nice to know that the developer listens to customers (paying or not) so if you expand to the paid tier you’ll get good service.

Developer Response

We're working on this bug at the moment, and we hope to have it fixed in an upcoming release. We're very sorry for the wait time on this!


Slack Technologies, Inc.
85.2 MB
English, Amharic, Arabic, Bengali, Bulgarian, Catalan, Croatian, Czech, Danish, Dutch, Estonian, Filipino, Finnish, French, German, Greek, Gujarati, Hebrew, Hindi, Hungarian, Indonesian, Italian, Japanese, Kannada, Korean, Latvian, Lithuanian, Malay, Malayalam, Marathi, Norwegian Bokmål, Persian, Polish, Portuguese, Romanian, Russian, Serbian, Simplified Chinese, Slovak, Slovenian, Spanish, Swahili, Swedish, Tamil, Telugu, Thai, Traditional Chinese, Turkish, Ukrainian, Vietnamese
Age Rating
Rated 4+
© Slack Technologies, Inc.


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