227K reviews
Content rating
Everyone
50M+
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About this app

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. Tick off your to-do list and make progress on your projects 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 organise your conversations by topic, project 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 the tools and services you already use into your workflow, 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
• Customise your notifications so you stay focused on what matters

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

Having trouble? Please contact feedback@slack.com
All your team communication in one place
Updated on
2 Nov 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    App info and performance
  • This app may collect these data types
    Personal info, Photos and videos and 6 others
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

221K reviews
Shou A-jah
30 July 2026
Update: the desktop (web) app does not show all the send messages in the activities table. Anything sent, should show. Also, when you set a reminder, or schedule a message, it only shows the numerical date as if someone will remember off top the day of week as well. Lastly, if you upload attachments on the mobile device, the web app does not display those attachments even when you have a connection.
18 people found this review helpful
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SLACK TECHNOLOGIES L.L.C.
25 November 2022
Sorry to hear your app isn't marking messages as read. When you have a moment, please navigate to your app’s "You" tab > "Preferences" > "Send Feedback" to flag this with our support team. We’ll be happy to help!
Anchit
12 August 2026
Audio device switching on Android is absolutely, completely, definitively, unforgivably borked. Random, unprompted switches, inability to switch devices even from the audio output menu, general audio drops as it switches from loudspeaker to phone audio unprompted. I expect better from an app that claims to run comms at so many big name orgs. Absolutely unacceptable.
3 people found this review helpful
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Dan
6 June 2026
In a lot of ways this program is useful but in other ways it's hindering and inconsistent. sometimes I can respond to comments, photos, directly but 25% of the time I cannot. sometimes I can click on a photo to zoom in and examine it, 25% I have to open in a Web browser notifications are VERY finicky. I find VERY OFTEN at times my status is changed to inactive and I suspect that has a lot to do with it. sometimes my messages won't go through at all and I have to manually reattempt
8 people found this review helpful
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What's new

Bug fixes
• We cleaned the code to make sure that everything’s running smoothly. Slack – now with a streak-free shine.



Content rating
Everyone
Users interact
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App support

About the developer
Slack Technologies L.L.C
feedback@slack.com
415 Mission St FL 3 San Francisco, CA 94105-2504 United States
+1 812-994-1053

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