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Slack

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Read 397 Slack reviews and testimonials from customers, explore 173 case studies and customer success stories, and watch 32 customer videos to see why companies chose Slack as their Internal Communications Software

Slack is building the platform that connects teams with the apps, services, and resources they need to get work done. Launched in 2014, Slack is the fastest growing business application in history. Millions of people around the world use Slack to bring their teams together, make sense of their work, and drive their business forward.

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Customer Rating Review Score based on 5233 reference ratings
4.8/5.0 (5233)
  • Fall 2025 Market Leader Internal Communications Software
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    Workplace is a collaborative platform run by Facebook. It is built on Facebook's powerful systems that keep more than a billion people's information safe. It connects everyone in your organization to turn ideas into action and get more done.

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397Testimonials

  • "The main reason for building this Slack tool was to operationalize it, make a very consistent flow that all our incidents go through. The tool helps us make sure we …

    John Arthorne Production Engineering Lead

  • "The company-wide introduction of Slack has both transformed our internal communication at SoftBank and had a positive effect on our customers and stakeholders."

    Kunihiro Fujinaga Senior vice president, business strategy and marketing, corporate business unit

  • “As a default, channels should be public. Our philosophy is that we should have as few discussions in DMs as possible.”

    Abhash Kumar Vice-President of Marketing
396 more testimonials currently locked

173 Case Studies

  • MTA New York City Transit moves transport forwards with Slack

    Sarah Meyer Chief Customer Officer

  • Unifying product experience and company culture at Autodesk

    Guy Martin Director

  • Improving collaboration with Slack

172 more case studies currently locked

32 Customer Videos

31 more videos currently locked

Additional Slack Information & Resources

Read Slack Reviews, Testimonials & Customer References from 397 real Slack customers.

Browse Slack Case Studies, Customer Success Stories, & Customer References from 173 businesses that use Slack.

Watch Slack Customer Videos to learn why 32 businesses chose Slack.

FeaturedCustomers has 1,910,851+ validated customer references including reviews, case studies, success stories, customer stories, testimonials and customer videos that will help you make better software purchasing decisions.