A Password Manager Where Your Vault Never Leaves Your Devices
You've probably had this thought before: to sync passwords across your laptop, phone, and browser, you have to hand your entire vault to a company and hope they never get breached. That's the tradeoff most password managers ask you to make. Bramble is an open-source project that skips the tradeoff entirely—your vault syncs between your devices peer-to-peer, and no server ever holds it.
What It Does
Bramble is a password manager that runs where you do. There's a browser extension for Firefox and Chromium browsers (Brave, Vivaldi, Chrome, Arc, and friends), a desktop app for macOS and Linux, an iOS app, and an Android app. All four share the same encrypted vault and the same Rust crypto core.
The core idea is straightforward: your passwords are encrypted on your own device and stay there—in the browser's private extension storage, in ordinary files on your own disk in the desktop app, and in app-private storage on mobile. Your devices then sync with each other peer-to-peer, end-to-end encrypted, without your vault ever touching a server. That means no account to create and no company sitting on a database of everyone's passwords.
The feature set is what you'd expect from a modern manager: autofill, passkeys, biometric unlock on mobile, a global quick-access panel on desktop, an always-on sync hub, scheduled backups, and multiple vaults.
Why It's Cool
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The architecture is the pitch. Most password managers are a hosted service with a client attached. Bramble inverts that—the client is the product, and sync is a direct conversation between your devices. There's no central vault to subpoena, breach, or leak, because there's no central vault.
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One crypto core, four platforms. The same Rust crypto core sits behind the browser extension, desktop app, and both mobile apps. That's a smart way to keep security-critical code in one place instead of reimplementing encryption per platform and hoping each version gets it right.
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It covers the passkey gap. Passkeys are the part of the passwordless story that's easy to talk about and annoying to implement. Bramble supports creating and signing in with passkeys, which matters if you're trying to move off passwords without keeping a second manager around just for the modern stuff.
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Desktop gets a real sync hub. The desktop app isn't just a vault viewer—it's an always-on sync hub, which makes it useful as the anchor device in your setup. Add scheduled backups and you've got a practical local-first workflow instead of a web app in a trench coat.
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Biometric unlock where it counts. Face ID and Touch ID on iOS, biometric unlock on Android, plus native autofill services on both—the mobile experience is treated as a first-class citizen rather than an afterthought.
How to Try It
Bramble ships as installable apps rather than a library, so getting started is mostly about picking your platform:
- Browser extension — grab it from the Chrome Web Store or Firefox Add-ons. Install it and you're up and running in about a minute.
- Desktop (macOS, Linux) — download from bramble.sh.
- Android — install from the Releases page.
- iOS — get it from the App Store.
Once you've got it on more than one device, the sync settings are where you'll spend your time—that's where you pair devices and manage the peer-to-peer connection. You can also poke around the source, file issues, or ask questions in the project's Matrix room (#general:bramble.sh).
Head to the repo to get started: github.com/flythenimbus/bramble
Final Thoughts
Bramble is for people who've decided that "trust us, we're secure" isn't a good enough answer for their password vault. If you're comfortable managing your own devices and you want sync without a middleman, the peer-to-peer model here is exactly the right shape. The cross-platform coverage and shared Rust crypto core suggest the project takes the boring, important parts seriously. If you've been waiting for a local-first password manager that doesn't feel like a compromise, this is worth a look.
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