Microsoft Teams chat, laid out like Slack.

Wren is a free Mac app for your Teams chats and channels. Everything you send still lands in Teams, so nobody else has to change a thing.

Download for Mac Setup guide for IT

Version 0.5.0, for Apple silicon and Intel Macs. Your IT team approves it once.

Wren showing a group chat called Bridge crew. A green sidebar lists unreads, direct messages, group chats and teams; the conversation and message box fill the rest of the window.

The same Wren window with a teal sidebar.

The same Wren window with a blue sidebar.

The same Wren window with a rust-red sidebar.

The same Wren window with a graphite sidebar.

See everything new on one page

Unreads gathers every new message from every chat and channel, newest first. Read it top to bottom, then mark it all as read. Teams stays in step.

⌘⇧A opens it from anywhere.

The Unreads page: a card for Elowen Brightwater with five new messages, including a mention, a linked PDF and a chart.

Threads open beside the chat

Replies to a channel post open in a panel on the right, so you keep your place in the conversation. Each thread keeps its own draft.

The General channel with a thread of three replies open in a panel on the right.

Start a group chat while you type names

Add one person for a direct message, or several for a group. Name it if you like, and add people later with a choice of how much history they see.

⌘N starts a new message.

The New message dialog, with Mira Solace suggested after typing Mi.

Also in Wren

Markdown as you type: Bold, italics, code, lists, @mentions and emoji shortcodes, with a saved draft in every chat.
Pictures and GIFs: Paste a screenshot to send it, or a Giphy link to send the GIF. Click any picture to see it full size.
Tasks: Turn a message into a to-do that links back to it.
Calls: The call buttons start a Teams call with everyone in the chat. Microsoft doesn’t let other apps place calls, so the call runs in Teams.
Accessibility: Follows your Mac’s text size, motion and contrast settings, with labels for VoiceOver.
Jump anywhere: ⌘K finds any chat, person or channel. ⌥⇧↓ goes to the next unread one.

Your messages go straight to Microsoft

Wren signs in with your work account and talks to Microsoft Teams directly. There’s no Wren server in the middle, nothing stored anywhere but your Mac, and no tracking.

Your sign-in is kept in the macOS Keychain.
Wren can only see what you can already see in Teams.
Your organisation’s multi-factor authentication and access rules still apply.

Before you install

Wren isn’t made by Microsoft. It’s an independent app that uses Microsoft Graph, the same way other approved apps do.
Your IT team approves it once. It takes an admin about ten minutes. Until then, Wren can’t sign you in.
macOS will ask you to confirm the first time. Wren isn’t notarised by Apple yet, so you allow it once in Privacy & Security.
Some things aren’t there yet. Your Outlook calendar, sending files other than images, and syncing tasks with Microsoft To Do.

For IT

Wren is a public client with delegated permissions only. It has no client secret, no server and no telemetry.

Register the app in Entra ID. Add http://localhost as a redirect URI for mobile and desktop applications.
Grant the permissions. Chat, channel and presence permissions, all delegated, so people only see what they already can in Teams.
Share two values. Send people the client ID and your tenant. They enter them once when they first open Wren.

Full IT setup guide Security overview

Get Wren

Free, for Apple silicon and Intel Macs.

Download for Mac What’s new in 0.5.0