• Navigation
  • open search





Editors' Review

Slack is a popular messaging app similar to IRC (Internet Relay Chat) that's oriented toward small-team collaboration. It's free to use and available for Windows, MacOS, and mobile. Subscribe to Slack Plus for features like guest access, unlimited message archiving, guaranteed uptime, and increased cloud storage (20GB, versus 5GB in the free version).


Slack doesn't skimp on the free version: You can get Slack for Windows, Mac, mobile, and within a Web browser. And in any of those versions, you can make two-way voice and video calls, apply optional two-factor authentication, store up to 10,000 messages, and use up to 5GB of cloud storage per user without forking over any money to Slack. This helping of features could easily support a small business.

Saves messages when you're offline: Slack's cloud keeps copies of all messages its users send, so when you log in, you can quickly catch up on any discussion that you might have missed.

Integrated support bot: Slackbot is a conversational AI like Siri that can answer basic questions about how to use the service, as well as provide links to Slack's website for detailed answers and tutorial videos. This approach is more efficient and informative than paging through a manual or a FAQ.


Occasional start-up quirks: Every once in a while, Slack may present you with a nearly empty window when you open it, save for the menus at the top. If you click the Window menu, select "Sign into another team," and give it the email address associated with your Slack account, the service will send you an email containing a link that will let you log in to the discussion groups that this account has access to. Clicking the link should reset the Slack interface and let you resume using it as normal, but this process can be a hassle, especially when time is of the essence. Thankfully, it doesn't happen often.

Bottom line

Slack can scale smoothly from a handful of users to a sizeable business, and the free version will give you most or all of the features you want. However, its main competitor, HipChat (Windows, Mac, iOS, Android), is evolving just as quickly and is worth taking a look at, too.

read more +


User Reviews

Update Your Review

Since you've already submitted a review for this product, this submission will be added as an update to your original review.

The posting of advertisements, profanity, or personal attacks is prohibited.
Click here to review our site terms of use.

show reviews

Full Specifications


Publisher Slack Technologies
Publisher web site
Release Date March 16, 2017
Date Added March 16, 2017
Version 2.5.2


Category Communications
Subcategory Chat

Operating Systems

Operating Systems Windows 7/8/10
Additional Requirements None

Download Information

File Size 74.97MB
File Name SlackSetup.exe


Total Downloads 11,335
Downloads Last Week 69


License Model Free
Limitations Not available
Price Free
Report a problem
Latest Stories
How to check out Microsoft's Chrome-like Edge browser for Windows 10

How to check out Microsoft's Chrome-like Edge browser for Windows 10

by Clifford Colby

If you want to test an early version of Microsoft's reworked Edge browser, here's your chance.

Read more
How to reinstall updates that Windows 10 automatically uninstalled

How to reinstall updates that Windows 10 automatically uninstalled

by Clifford Colby

Microsoft this week will try to resolve a startup failure issue by uninstalling recently installed u...

Read more
Here's how to save your Google+ data before Google shuts it down

Here's how to save your Google+ data before Google shuts it down

by Sandra Vogel

Google's shuttering its G+ social network. Grab your stuff while you still can.

Read more