Wren is a fast, native-feeling Mac app for Microsoft Teams chats and channels, laid out the way Slack users expect: a sidebar, threads in a side panel, and an Unreads page that shows only what's new. It works directly with Microsoft Graph using your own work account, so your messages stay in Teams and there's no server in the middle. Group chats, five colours named after birds, and support for macOS text size, motion and contrast settings.