Whether you’re on your first day of work in a new role, looking for a messaging system for your own business, or simply want to keep up to date with tech happenings, there are lots of reasons to ask “what is Slack?”. As a relatively contemporary instant messenger compared to the alternatives, it’s still unknown to many possible users, so we’re going to go over exactly what Slack does, how you can use it, and how it lines up against its competitors.

For more tech assistance, check out our guides on what is Zoom, what is Trello, and what is Apple Arcade. Or, if you’re looking for some groovy tunes to keep you busy while you’re working, check out our YouTube Music download, Spotify download, and Apple Music download guides.

What is Slack?

Slack is an instant messaging service predominantly for workplaces, but can be used in other instances too. With similarities to Discord, Slack is one of the most streamlined messenger services you can need, with the functionality of creating multiple different channels within the same organisation, linking Google events from your calendar, and plenty more.

How do I download Slack?

While Slack has an in-browser application, it’s often quicker and easier to use the client app. To download Slack for PC check out the steps below. There is a slight difference depending on if you’re already signed into the web browser, so follow the method accordingly or check out our Slack download guide.

If you’re signed into Slack:

If instead, you’re looking to download Slack on Mac, you can follow these steps:

If it’s iPhone you want to download Slack for, follow this method:

If instead, you need a guide on how to download Slack for Android, see below:

As with most subscription services, there are various packages for Slack, each with a set amount of features to suit the price. Of course, all the pricings are available on the Slack website, but we’ve got a table laying out the basics below.

  • 90-day message and file history

  • Data encryption and two-factor authentication

  • One workspace

  • Unlimited message and file history

  • Unlimited integration with other apps

  • Data encryption and two-factor authentication

  • One workspace

  • Slack huddles and screen sharing

  • Custom user groups

  • 24-hour support

  • All Pro features

  • SCIM user management

  • Data residency and exports

  • All Business+ features

  • HIPAA compliance

  • Unlimited channels

  • Custom terms of service