Caprine is a free, open-source macOS desktop client for Facebook Messenger that wraps the web experience in a polished native-feeling window — giving power users privacy controls, keyboard shortcuts, and a distraction-free interface that the browser tab never can.
What is Caprine?
Caprine is a dedicated Mac application for Facebook Messenger, built by prolific open-source developer Sindre Sorhus and hosted publicly on GitHub. Rather than forcing you to keep a browser tab alive or use Facebook's own bloated web app, Caprine runs Messenger in an isolated, purpose-built shell that stays out of your way until you need it.
The name, if you're curious, is the adjective for goat — a nod to the project's mascot and Sindre's long-running habit of naming his tools after animals and nature. Don't let the whimsy fool you; this is serious daily-driver software.
What does Caprine do best?
Caprine's strongest suit is privacy by default. It ships with a read receipts toggle baked right into its preferences — something Facebook has never offered natively — so you can read messages without broadcasting your presence. The same goes for typing indicators: you can mute them globally.
- Dark mode done properly — Caprine has had a true dark theme for years, respecting macOS's system appearance preference automatically. The styling is tighter and more consistent than what Facebook's own site delivers.
- Conversations sidebar — keeps your active threads docked and visible without navigating away, which makes context-switching between chats far faster than the browser.
- Notification badge on the Dock icon — unread counts bubble up to macOS natively, so you're not checking a tab for no reason.
- Keyboard-first navigation — Cmd+K jumps to a conversation, Cmd+1 through Cmd+9 jump to pinned threads. If you live at the keyboard, you'll appreciate this immediately.
- Blocks tracking pixels — Caprine strips Facebook's image proxy tracking from messages by default, which is more than Safari or Chrome extensions reliably do.
I've had Caprine in my Dock for over a year. The moment I stopped using Messenger in Firefox, my browser tab count dropped by one and my context-switch anxiety dropped noticeably more.
Is Caprine free?
Yes — Caprine is completely free to download and use, with no paid tiers, no subscriptions, and no in-app purchases. It is open-source under the MIT licence on GitHub, meaning the source code is public and auditable by anyone.
You can install it via Homebrew Cask (brew install --cask caprine) or download a DMG directly from the GitHub releases page. Because it's community-maintained, there is no commercial support — but the issue tracker is active and Sindre's projects are generally kept current with macOS releases.
Who should use Caprine?
Caprine is the right call for anyone who still has meaningful conversations on Messenger but refuses to keep a browser tab open for it. That includes freelancers coordinating with clients who insist on Messenger, people staying in touch with family groups that migrated there years ago, and Mac users who simply want their communication apps to behave like Mac apps.
It is not the right tool if you need a true native rewrite with offline support or iMessage-level OS integration. Caprine is ultimately a smarter wrapper around the Messenger web app — it depends on your Facebook account and an active internet connection, just as the browser version does. If you've already moved your contacts to Telegram, Signal, or iMessage, you don't need it.
What are the best Caprine alternatives?
For Messenger specifically, your realistic alternatives are: the official Facebook Messenger app for Mac (available on the App Store, heavier, less configurable), running Messenger in a browser tab (no Dock badge, no keyboard shortcuts, shares browser memory with everything else), or using a multi-protocol client like Franz or Rambox (which aggregate Messenger alongside Slack, WhatsApp, and others — useful if you live in five services simultaneously but overkill if Messenger is the only one).
If privacy is your primary driver and you have any influence over your contacts' app choices, Signal for Mac is the correct long-term answer. But Caprine is the best solution for Messenger specifically, full stop.
How does Caprine compare to the official Messenger Mac app?
The App Store Messenger app is a heavier, Electron-based port maintained by Meta. It carries more features — voice and video calls work more reliably — but it also carries more tracking surface, ships with no read-receipt or typing-indicator toggles, and updates on Meta's schedule rather than the open-source community's. Caprine wins on privacy controls, transparency, and how well it fits macOS conventions. The official app wins if video calling is essential to your workflow.
