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Top Open Source Security & Privacy Tools in 2026

A curated collection of the 8 best free and open-source Security & Privacy tools in 2026. Compare features, GitHub stars, tech stacks, and self-hosted software.

  • Zen Browser

    Privacy-focused, feature-rich web browser

    Stars
    44,112
    Last commit
    11d ago
    License
    MPL-2.0

  • Passbolt

    Open source password manager for teams

    Stars
    6,095
    Last commit
    17d ago
    License
    AGPL-3.0

  • PearPass

    Open-source local-first password manager

    Stars
    533
    Last commit
    23d ago
    License
    Open Source

  • Padloc

    Open source end-to-end encrypted password manager

    Stars
    2,923
    Last commit
    33mo ago
    License
    AGPL-3.0

  • Helium

    Privacy-first browser that blocks ads and trackers by default

    Stars
    19,902
    Last commit
    13d ago
    License
    GPL-3.0

  • Cozy

    Open-source European personal cloud for secure data management

    Stars
    1,271
    Last commit
    11d ago
    License
    AGPL-3.0

  • Marble

    AI-powered fraud & AML compliance platform

    Stars
    587
    Last commit
    13d ago
    License
    Open Source

  • Bitwarden

    Open source password manager for teams and individuals

    Stars
    19,945
    Last commit
    10d ago
    License
    Open Source
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Showing 8 of 8 open-source tools