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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
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Customer Rating Review Score based on 5303 reference ratings
4.8/5.0 (5303)
  • 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

  • "We have a few club channels in Slack to encourage people to be able to bring their whole self to work and connect with colleagues."

    Jo Montanari Global People Programmes Director

  • "It’s much more than a chat app - it’s changed the way we work. I couldn’t imagine working without it now. You’d have to pry it out of our cold, …

    Tom Clark Head of Common Platform

  • "Slack helped us scale our product teams to provide frictionless customer experiences, increasing conversion rates and customer satisfaction."

    Patrik Mihailescu Senior Engineering Manager
396 more testimonials currently locked

173 Case Studies

  • Expanding a media company’s brand awareness with Slack

    Julian Wagner Senior Architect

  • Bolt uses automation for a human and efficient workplace

    Janis Sadinovs Head of People

  • Le Wagon scales one of the world’s best coding bootcamps with Slack

    Sébastien Saunier Co-Founder and Chief Technology Officer
172 more case studies currently locked

32 Customer Videos

  • Scaling award-winning culture with Slack
    Play Video
    Jeetu Mahtani SVP of International Operations
  • Dialing up developer innovation and customer capability with Slack
    Play Video
    Matt Beal Director of Technology Strategy and Architecture
  • Designing the Future with Slack
    Play Video
    Amir Khan Design and Analysis Lead
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 1,912,630+ validated customer references including reviews, case studies, success stories, customer stories, testimonials and customer videos that will help you make better software purchasing decisions.