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Open source Security Onion alternatives: 1 app ranked by verified data

Facts checked Nov 8, 2026AppBreakup editorialHow we rank

1 of the 7 Security Onion alternatives we track are open source. Wazuh ranks highest, with facts last verified Nov 8, 2026.

Quick comparison

#AppPricingVerified priceOpen sourcePlatformsVerified factsScore
1Wazuh logoWazuhOpen source$571/month (up to 100 agents)YesWeb, Linux, Windows +24 of 454.4
  1. Wazuh logo

    1. WazuhTop pick

    Best for: Security teams wanting a free, self-hosted SIEM and endpoint monitoring platform.

    Open sourceSelf-hostableWeb, Linux, Windows, macOS, Self-hosted

    54.4

    score / 100

    Why switch from Security Onion

    Free SIEM and host agent platform, stronger on endpoints and compliance than network capture.

    Pros

    • SIEM, endpoint monitoring, vulnerability detection and compliance in one platform
    • No licence cost when self-hosted
    • Agents for servers, desktops and cloud workloads
    • Optional managed cloud with a free trial

    Cons

    • Self-hosting the server, indexer and dashboard takes real setup and tuning
    • Managed cloud plans start at several hundred dollars a month
    • Default rules can be noisy until tuned
    Visit Wazuh Details and reviews
    How this score is calculated
    Editorial fit ×0.352
    Reviews ×0.363
    Clicks (90 days) ×0.150
    Freshness ×0.15100
    Votes ×0.150

    0 counted reviews, 0 up and 0 down votes. Full formula

    Is Wazuh a good Security Onion alternative?

    Verified facts

    4 of 4 verified
    Open source
    Yes
    Checked Nov 8, 2026wazuh.com(opens source in a new tab)
    License cost
    None
    Checked Nov 8, 2026wazuh.com(opens source in a new tab)
    Cloud free trial
    14 days
    Checked Nov 8, 2026wazuh.com(opens source in a new tab)
    Cloud starting price
    $571/month (up to 100 agents)
    Checked Nov 8, 2026wazuh.com(opens source in a new tab)