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Strongbox alternatives · Passwords

Open-source alternatives to Strongbox

Strongbox is not described as open source on its own site. 9 of the 28 other password managers in this directory are open source, according to their own sites.

Strongbox has a free plan. Paid plans start at $2.99 per month or $24.99 per year (Pro, US App Store in-app price). All of them are free or have a free plan.

9 tools · Listings checked up to Nov 12, 2026 · Where the facts come from

How each one differs from Strongbox

  1. KeePassXC

    Free, open-source offline password manager for desktop

    • KeePassXC is free. Strongbox starts at $2.99 per month or $24.99 per year (Pro, US App Store in-app price).
    • Only KeePassXC lists Windows and Linux apps.
    • Only Strongbox lists an iOS app.
    • KeePassXC is open source, according to its own site.
    KeePassXC vs StrongboxKeePassXC pricing and details

  2. KeePass

    Free, open-source password manager for Windows with plugins

    • KeePass is free. Strongbox starts at $2.99 per month or $24.99 per year (Pro, US App Store in-app price).
    • Only KeePass lists Windows and Linux apps.
    • Only Strongbox lists an iOS app.
    • Only Strongbox lists a browser extension.
    KeePass vs StrongboxKeePass pricing and details

  3. KeePassDX

    Open-source Android app for local KeePass password and passkey vaults

    • KeePassDX starts at $10 one-time for the Pro support version. Strongbox starts at $2.99 per month or $24.99 per year (Pro, US App Store in-app price).
    • Only KeePassDX lists an Android app.
    • Only Strongbox lists iOS and macOS apps.
    • Only Strongbox lists a browser extension.
    KeePassDX vs StrongboxKeePassDX pricing and details

  4. KeePassium

    KeePass-compatible password manager for iPhone, iPad and Mac

    • KeePassium starts at €19.99 per year (Premium). Strongbox starts at $2.99 per month or $24.99 per year (Pro, US App Store in-app price).
    • Only Strongbox lists a browser extension.
    • KeePassium is open source, according to its own site.
    • Strongbox also covers passkeys.
    KeePassium vs StrongboxKeePassium pricing and details

  5. Bitwarden

    Open-source password manager with a free plan and self-hosting

    • Bitwarden starts at $1.65 per month, billed annually at $19.80 (Premium). Strongbox starts at $2.99 per month or $24.99 per year (Pro, US App Store in-app price).
    • Only Bitwarden lists a web app.
    • Only Bitwarden lists Windows, Linux and Android apps.
    • Bitwarden is open source, self-hostable and end-to-end encrypted, according to its own site.
    Bitwarden pricing and details

  6. Proton Pass

    End-to-end encrypted password manager with email aliases

    • Proton Pass starts at $2.99 per month, billed every 12 months ($35.88); $4.99 billed monthly. Strongbox starts at $2.99 per month or $24.99 per year (Pro, US App Store in-app price).
    • Only Proton Pass lists a web app.
    • Only Proton Pass lists Windows, Linux and Android apps.
    • Proton Pass is open source and end-to-end encrypted, according to its own site.
    Proton Pass pricing and details

  7. Psono

    Open-source password manager that a company runs on its own servers

    • Psono starts at $3 per user / month, billed annually (minimum 25 users). Strongbox starts at $2.99 per month or $24.99 per year (Pro, US App Store in-app price).
    • Only Psono lists a web app.
    • Only Psono lists Windows, Linux and Android apps.
    • Psono is open source and self-hostable, according to its own site.
    Psono pricing and details

  8. Passbolt

    Open-source password manager for teams, self-hosted or cloud

    • Passbolt starts at $4.90 per user / month, billed annually (Pro, 10-user minimum). Strongbox starts at $2.99 per month or $24.99 per year (Pro, US App Store in-app price).
    • Only Passbolt lists a web app.
    • Only Passbolt lists Windows and Android apps.
    • Only Strongbox lists a macOS app.
    Passbolt pricing and details

  9. Padloc

    Open-source, end-to-end encrypted password manager with team plans

    • Padloc starts at $3.49 per month, or $34.90 per year (Premium). Strongbox starts at $2.99 per month or $24.99 per year (Pro, US App Store in-app price).
    • Only Padloc lists a web app.
    • Only Padloc lists Windows, Linux and Android apps.
    • Padloc is open source and end-to-end encrypted, according to its own site.
    Padloc pricing and details

Common questions

Is there an open-source alternative to Strongbox?

Yes. KeePassXC, KeePass, KeePassDX, KeePassium, Bitwarden, Proton Pass, Psono, Passbolt and 1 more are open source, according to their own sites.

Is Strongbox open source?

Strongbox is not described as open source on its own site. The listing was checked on Nov 9, 2026 against the pages it cites.

When was this checked?

Each listing shows its own date. On this page they run from Oct 5, 2026 to Nov 12, 2026. Vendors change prices and plans without notice, so confirm on their site before you buy.

This page is built from the listings. A tool is here because its listing says so, and the order is how close each is to Strongbox: the alternatives its listing names first, then the tools that share the most features with it.