Free Open Source Password Managers

What "Free" Really Means in Password Managers

The word "free" gets used loosely in software marketing, so it is worth being precise. In the open source world, "free" can mean two things: free as in cost (you pay nothing) and free as in freedom (you can inspect, modify, and redistribute the code). The best open source password managers deliver both.

Some proprietary password managers offer free tiers that limit you to a single device, cap your stored passwords, or strip out essential features like autofill or password sharing. These free tiers are designed to frustrate you into upgrading. The open source options covered here take a different approach. Their free versions are genuinely usable as your primary password manager without hitting artificial walls. When paid tiers exist, they add enterprise integrations or convenience features rather than gating basic functionality.

There is one honest cost to acknowledge: self-hosted options like Vaultwarden require a server to run on. A cheap VPS costs three to five dollars per month, or you can use existing hardware. The software itself is free, but the infrastructure has a cost unless you run it on hardware you already own.

KeePassXC: Completely Free, Forever

KeePassXC has no paid tier, no premium features, no subscription, and no company behind it trying to monetize your usage. It is a community-driven project maintained by volunteers, funded by donations, and licensed under the GPL. Every feature it has is available to every user.

The feature set is substantial. KeePassXC stores passwords, secure notes, credit card details, and TOTP authentication codes in a single encrypted database file. The encryption uses AES-256 or ChaCha20 with Argon2 key derivation, which is among the strongest available. A built-in password generator creates strong random passwords with configurable length, character sets, and word-based passphrases. The browser extension integrates with Chrome and Firefox for autofill, communicating with the desktop app over a local connection.

For developers, KeePassXC includes SSH agent integration that serves SSH keys directly from the encrypted database. This means your private SSH keys never exist as files on disk, reducing the risk of key theft. You unlock your KeePassXC database, and your SSH keys become available to your terminal session.

The main trade-off is that KeePassXC is desktop-only and stores your vault as a local file. There is no cloud sync built in, so you manage file synchronization yourself using tools like Syncthing, Nextcloud, or a cloud storage service. Mobile access requires separate KeePass-compatible apps like Strongbox on iOS or KeePassDX on Android, both of which read the same KDBX database format.

Vaultwarden: Free Self-Hosted Bitwarden

Vaultwarden is free, open source software that gives you the full Bitwarden experience on your own server. What makes it particularly notable in the "free" category is that it includes features Bitwarden normally reserves for its paid tiers: organization support for shared vaults, file attachments, emergency access, and the admin panel. You get the equivalent of Bitwarden Premium and parts of Teams functionality without paying anything for the software itself.

The resource requirements are minimal. Vaultwarden runs in a single Docker container using under 50 MB of RAM and negligible CPU. It works on a Raspberry Pi, a five-dollar VPS, or a spare computer on your home network. The SQLite database means there is no separate database server to maintain. The entire deployment can be backed up by copying a single directory.

Because Vaultwarden implements the Bitwarden API, it works with all official Bitwarden client apps and browser extensions on Windows, macOS, Linux, iOS, and Android. Users interact with the familiar Bitwarden interface without knowing or caring that the server is Vaultwarden instead of the official Bitwarden cloud. This compatibility extends to the import and export features, so migrating to or from Vaultwarden is straightforward.

The cost is the server itself and the time to maintain it. If you already run a home server or have a VPS for other purposes, adding Vaultwarden is trivial. If you would need to set up a server specifically for this, factor in the monthly hosting cost and the occasional maintenance time for updates and backup verification.

Bitwarden Free Tier: No Payment Required

Bitwarden's free tier is unusually generous compared to proprietary competitors. It includes unlimited passwords on unlimited devices, a password generator, secure notes, credit card and identity storage, two-factor authentication via authenticator apps, and the Bitwarden Send feature for sharing encrypted text or files. There is no device limit, no password cap, and no time trial.

The free tier does exclude some features that the premium tier at ten dollars per year provides. These include advanced 2FA with hardware security keys (YubiKey, FIDO2), vault health reports that identify weak and reused passwords, 1 GB of encrypted file storage, emergency access for designating a trusted contact, and the built-in TOTP authenticator. For most individual users, the free tier covers everything they need. The premium features are genuine additions rather than capabilities artificially removed from the free version.

Bitwarden's free tier uses the same infrastructure, encryption, and security model as the paid tiers. Your vault is encrypted with AES-256 on your device before syncing to Bitwarden's cloud servers. The company cannot read your passwords. All client and server code is open source and published on GitHub, and Bitwarden commissions annual security audits from Cure53 with publicly published results.

Passbolt Community Edition: Free for Teams

Passbolt's community edition is entirely free and self-hosted, making it one of the few options that provides team credential sharing at no software cost. It includes per-credential sharing with three access levels (view, edit, full control), OpenPGP end-to-end encryption, browser extensions for Chrome and Firefox, user management, folder organization, and activity logging.

The community edition is designed for teams that need to share credentials securely without paying for a SaaS subscription. It works well for development teams sharing API keys and staging credentials, small businesses sharing login access to shared accounts, and IT departments managing service credentials across team members. The per-credential sharing model is more secure than shared vault approaches because you can grant access to exactly the secrets each person needs without exposing everything in a vault.

The paid Pro and Cloud tiers add SSO with Microsoft Entra ID and Google Workspace, LDAP directory sync, mobile apps, MFA enforcement policies, and premium support. These are genuine enterprise features that small teams can live without.

Proton Pass Free Tier

Proton Pass offers a free tier that includes unlimited passwords and unlimited email aliases. The email alias feature is distinctive: Proton Pass generates unique forwarding addresses for each account, so if a service leaks your email or starts sending spam, you can disable that specific alias without affecting your real address. The free tier includes browser extensions for Chrome and Firefox and mobile apps for iOS and Android.

The Plus tier adds integrated 2FA, multiple vaults, password sharing, and dark web monitoring. Proton Pass is included at no extra cost with a Proton Unlimited subscription, which bundles ProtonMail, ProtonVPN, Proton Drive, and Proton Calendar. For users already in the Proton ecosystem, the password manager is effectively a bonus feature.

Other Free Options Worth Mentioning

Padloc is an open source password manager with a clean, minimal interface. The free tier covers one device with a single vault. It is a good choice if you use only one device and want the simplest possible experience.

AuthPass is a lesser-known open source password manager that uses the KeePass KDBX format. It has native apps for Windows, macOS, Linux, iOS, and Android, making it one of the few KeePass-compatible options with official mobile apps. It is free and open source with no paid tier.

Pass (the standard unix password manager) is a command-line tool that stores each password as a GPG-encrypted file in a directory tree. It is loved by terminal-oriented users and integrates with git for version history and sync. Extensions add browser integration, clipboard management, and one-time password support. It is completely free and available in virtually every Linux distribution's package manager.

Choosing the Right Free Option

If you want zero setup complexity and cloud sync out of the box, start with Bitwarden's free tier. You create an account, install the apps, and start saving passwords. No server, no file management, no configuration.

If you want no cloud involvement at all, use KeePassXC. Your data stays on your device as a single encrypted file, and you control everything about where it goes.

If you want cloud sync with full data sovereignty and some technical comfort with Docker, deploy Vaultwarden. You get the Bitwarden experience on your own hardware with premium features included.

If you need to share credentials across a team at no software cost, Passbolt Community Edition is purpose-built for that scenario.