Reprinted from TidBITS by permission; reuse governed by Creative Commons license BY-NC-ND 3.0. TidBITS has offered years of thoughtful commentary on Apple and Internet topics. For free email subscriptions and access to the entire TidBITS archive, visit http://www.tidbits.com/ Slack for Mac 3.0 Agen G. N. Schmitz [1]Slack has released version 3.0 of its Mac desktop client, a major new release for the group messaging system and collaboration tool that uses less memory and starts up faster ' particularly when you have a lot of workspaces. The app now flips between workspaces more quickly, helps you identify which workspaces you are currently signed out of (with a lock badge icon), improves the speed of reload during drag and drop operations, moves the sidebar out of the way when viewing full-screen video, fixes some crashes experienced in macOS 10.13 High Sierra, and ensures that scrolling through messages is flicker-free. (Free from [2]Slack and the [3]Mac App Store, 71 MB, [4]release notes, 10.9+) References 1. https://slack.com/ 2. https://slack.com/downloads 3. https://itunes.apple.com/us/app/slack/id803453959?mt=12&at=10l5PW 4. https://slack.com/release-notes/mac .