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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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  • 397 Testimonials View
  • 173 Case Studies View
  • 32 Customer Videos View
Customer Rating Review Score based on 5516 reference ratings
4.8/5.0 (5516)
  • 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.

    Learn more about Workplace from Meta

397Testimonials

  • "If the decision's not in Slack, it might as well not have happened."

    Stephanie Korey Co-founder

  • “Slack helps us foster a culture of transparency at Service NSW. We've created a channel, we’ve published the proposed structure and we're inviting open communication.”

    Katie McDermott Executive Director, Digital Services

  • "When we're going to do some scheduled maintenance, we’ll literally pin, or Pinguin, the details in our channel. It forces people to read the message, and so we know people …

    Sandy Eckstrom Lead Product Owner for Agile Enablement
396 more testimonials currently locked

173 Case Studies

  • PEGASUS boosts revenue by 1900% with Slack Sales Elevate and Salesforce

    Ukrit Vanagosoom Deputy Managing Director

  • Keeping prices low and customers happy

    Jack Hanlon VP Analytics

  • Slack Admin of the Year Sheryl Anderson builds a best-in-class Slack culture …

    Sheryl Anderson Manager, Digital Workplace
172 more case studies currently locked

32 Customer Videos

  • Keeping global teams connected and productive with Slack
    Play Video
    Fred McAmis VP, Learning and Development
  • Royal Bank of Canada - Customer Success Story (Martin Wildberger - Executive Vice President of Innovation and Technology)
    Play Video
    Martin Wildberger Executive Vice President of Innovation and Technology
  • How Slack became the operational glue of McLeod Cranes
    Play Video
    Scott McLeod Managing Director
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 2,119,652+ validated customer references including reviews, case studies, success stories, customer stories, testimonials and customer videos that will help you make better software purchasing decisions.