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 2.3 Agen G. N. Schmitz [1]Slack has released version 2.3 of its Mac desktop client with improved speed at startup and when switching channels or teams. The group messaging system and productivity tool streamlines the user interface when you're signed into more than one team by removing the titlebar from the window, redesigns the team sidebar with better support for light themes, adds full-screen support when signing into a new team, and enables you to approve deep links from other apps. (Free from [2]Slack and the [3]Mac App Store, 64.2 MB, 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 .