Making work simpler, more pleasant, and more productive

At Slack, we’re 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.

Powering the work of global organizations.

50,000+ paying companies
use Slack (and counting)

  • 9

    9 million weekly active users

  • 43

    43 companies from the Fortune 100 list have paid Slack workspaces

  • 100

    Companies in over 100 countries use Slack

Less email. More productive. Our customers see an average 48.6% reduction in internal email.

Building the ecosystem for work

Connect your conversations with the tools and services that you use to get the job done. With over 1,000 apps and a robust API, the Slack platform team works with partners and developers globally to build apps and integrations that streamline your work, automates mundane tasks and brings context into your conversations in Slack.

The Slack App Directory gives you access to thousands of apps that can extend the capabilities of your Slack team.

The Slack Fund is an $80 million dollar fund that supports developers and small companies building apps for Slack.

Slack employees working and laughing in an open kitchen area. Sign in the back reads 'But first, coffee.'

Located around the globe, and growing

Across our offices, teams at Slack come together with a shared purpose. We believe everyone deserves to work in a welcoming, respectful, and empathetic culture, and we work hard to make sure everyone at Slack has the support they need to thrive. Join us and do the best work of your life.

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The Slack Offices

San Francisco

155 5th Street
6th Floor
San Francisco, CA 94103
United States
Map of the San Francisco office

New York

436 Lafayette Street
6th Floor
New York, NY 10003
United States
Map of the New York office


1028 Hamilton Street
Suite 401
Vancouver, BC, Canada
Map of the Vancouver office


Yalding House
6th Floor
152-156 Great Portland St
London, UK W1W 6AJ
Map of the London office


4th Floor, One Park Place
Hatch Street Upper
Dublin 2, Ireland
Map of the Dublin office


The Maltstore, Level 1
551 Swanston St
Carlton, VIC 3053
Map of the Melbourne office


Otemachi Financial City
Grand Cube, 3F
1-9-2 Otemachi, Chiyoda-ku
Tokyo, Japan 100-0004
Map of the Tokyo office