Brewlet is a free, open-source macOS menu-bar app that surfaces Homebrew package updates as a native status-bar icon, letting you monitor and trigger upgrades without ever opening a terminal.
What is Brewlet?
Brewlet is a lightweight macOS menu-bar utility that acts as a graphical front-end for Homebrew, the command-line package manager. It sits quietly in your status bar, checks for outdated formulae and casks in the background, and gives you a one-click path to running brew upgrade — no Terminal window required. Think of it as the status indicator Homebrew always deserved but never shipped.
The project is open source, hosted on GitHub, and free to download. It has no paid tier, no telemetry, and no subscription nag. For the kind of developer or power-user who runs Homebrew daily but doesn't want to remember to type brew outdated every morning, Brewlet quietly fills that gap.
What does Brewlet do best?
Brewlet excels at passive awareness — it keeps one eye on your Homebrew packages so you don't have to. When packages fall out of date, the menu-bar icon changes state, giving you an at-a-glance signal without demanding your attention.
- Outdated-package badge: the icon updates to reflect how many formulae or casks are waiting for an upgrade, so you always know your package hygiene at a glance.
- One-click upgrades: trigger brew upgrade directly from the menu — the output streams into a minimal log view inside the popover so you can see exactly what changed.
- Scheduled checks: Brewlet can poll Homebrew automatically at configurable intervals, turning a manual chore into background infrastructure.
- Low resource footprint: because it shells out to the Homebrew CLI rather than reimplementing package logic itself, the app stays tiny and doesn't risk diverging from Homebrew's own behaviour.
I've been running Brewlet for a while now and the thing I appreciate most is the absence of surprise. Packages don't silently fall months behind because I forgot to check. The icon nudges me; I click; it's done.
Is Brewlet free?
Yes — Brewlet is completely free to download and use. There is no Pro tier, no in-app purchase, and no licence fee. The source code is publicly available on GitHub under an open-source licence, so you can inspect exactly what it does before you ever run it.
Who should use Brewlet?
Brewlet is the right tool for macOS users who rely on Homebrew to manage developer tools, CLI utilities, or productivity apps installed as casks — and who want to keep those packages current without building a habit around terminal maintenance.
If you are the kind of person who has twenty formulae installed and genuinely forgets that brew update && brew upgrade is something you should run weekly, Brewlet is a no-brainer install. It is equally useful for non-developers who adopted Homebrew for a handful of casks (think VLC, Rectangle, or iTerm2 installed via brew install --cask) and don't live in the terminal.
Power users who already have a cron job or shell alias doing this work probably won't need Brewlet. But for everyone else, it removes a class of low-grade mental overhead that accumulates quietly.
What are the best Brewlet alternatives?
The most direct competitor is Cork, a polished (paid) native SwiftUI app that goes further — it gives you a full package browser, install/uninstall controls, and a richer upgrade workflow. If you want a complete GUI package manager for Homebrew, Cork is worth the price. For pure update notifications with zero friction, Brewlet is the lighter, free option.
Cakebrew is another free graphical Homebrew front-end, though it lives in the Dock rather than the menu bar and hasn't seen recent active development. For users who want something that stays out of the way until it's needed, Brewlet's menu-bar posture is a better fit than Cakebrew's windowed approach.
You can also replicate a subset of Brewlet's behaviour with a shell alias in your .zshrc or a launchd plist — but that gives you no visual indicator, and you still have to remember to invoke it.
How does Brewlet compare to Cork?
Cork is the premium, fully-featured Homebrew GUI; Brewlet is the focused, free menu-bar notifier. Cork lets you browse, install, and remove packages with a rich SwiftUI interface. Brewlet does exactly one job — tell you when upgrades are available and run them — and does it without occupying Dock space or asking for money. For a developer who already loves the terminal but wants a passive upgrade reminder, Brewlet wins on simplicity. For someone who wants to replace the terminal entirely for Homebrew work, Cork is the better investment.
