https://macstaff.slack.com

Step 3 — Download Slack's desktop and mobile apps

You can sign in and use Slack from a web browser on your desktop at any time (just go to https://macstaff.slack.com). But by downloading the desktop and mobile apps, you can stay signed in to multiple workspaces, have more control over notifications, and stay in sync even when you’re on the move.

For download instructions, click the link for the apps that are right for you.

Mobile

iOS
Android
Windows Phone (beta)

Desktop

Mac OS X
Windows
Linux (beta)