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Open source DeepSource alternatives: 2 apps ranked by verified data

Facts checked Nov 8, 2026AppBreakup editorialHow we rank

2 of the 7 DeepSource alternatives we track are open source. SonarQube and Semgrep rank highest, with facts last verified Nov 8, 2026.

DeepSource has been acquired. DeepSource has joined Harness, according to a notice on the DeepSource website.

Quick comparison

#AppPricingVerified priceOpen sourcePlatformsVerified factsScore
1SonarQube logoSonarQubeFree plan + paid$34/month (Team plan, up to 100k LOC)YesWeb, Self-hosted4 of 483.8
2Semgrep logoSemgrepFree plan + paid$30 per contributor/month (Teams)YesWeb, Windows, macOS +15 of 564.8
  1. SonarQube logo

    1. SonarQubeTop pick

    Best for: Teams that want quality gates for code quality and security on every pull request

    Free plan + paidOpen sourceSelf-hostableWeb, Self-hosted

    83.8

    score / 100

    Why switch from DeepSource

    Long-established code quality and security analysis with a self-managed edition and broad language support.

    Pros

    • Combines code quality and security in one report
    • Choice of cloud service or self-hosted server
    • Free IDE extension for instant feedback
    • Free for public open-source projects

    Cons

    • Pricing scales with lines of code, which gets costly for large codebases
    • Free private tier is limited to 50k lines of code
    • Advanced security features are kept for higher tiers
    Visit SonarQube Details and reviews
    How this score is calculated
    Editorial fit ×0.3100
    Reviews ×0.363
    Clicks (90 days) ×0.15100
    Freshness ×0.15100
    Votes ×0.150

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

    Is SonarQube a good DeepSource alternative?

    Verified facts

    4 of 4 verified
    Free plan
    Private projects up to 50k LOC
    Checked Nov 8, 2026sonarsource.com(opens source in a new tab)
    Starting price
    $34/month (Team plan, up to 100k LOC)
    Checked Nov 8, 2026sonarsource.com(opens source in a new tab)
    Free trial
    14 days (Team plan)
    Checked Nov 8, 2026sonarsource.com(opens source in a new tab)
    License
    LGPL-3.0
    Checked Oct 30, 2026github.com(opens source in a new tab)
  2. Semgrep logo

    2. Semgrep

    Best for: Teams that want fast CI scans and easy-to-write custom rules

    Free plan + paidOpen sourceWeb, Windows, macOS, Linux

    64.8

    score / 100

    Why switch from DeepSource

    Fast open-source static analysis with easy custom rules, plus supply chain and secrets scanning in its platform.

    Pros

    • Rules are written in code-like patterns that are easy to read
    • Open-source CLI runs anywhere, including locally
    • Free edition covers small teams on the hosted platform
    • SAST, dependency and secrets scanning in one product

    Cons

    • Cross-file analysis and Pro rules need the commercial engine
    • Free edition is capped at 10 contributors
    • Paid products are billed separately per contributor
    Visit Semgrep Details and reviews
    How this score is calculated
    Editorial fit ×0.387
    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 Semgrep a good DeepSource alternative?

    Verified facts

    5 of 5 verified
    Free plan
    Yes, up to 10 contributors
    Checked Nov 8, 2026semgrep.dev(opens source in a new tab)
    Starting price
    $30 per contributor/month (Teams)
    Checked Nov 8, 2026semgrep.dev(opens source in a new tab)
    License
    LGPL-2.1
    Checked Nov 1, 2026github.com(opens source in a new tab)
    Languages
    35+
    Checked Nov 8, 2026semgrep.dev(opens source in a new tab)
    Secrets add-on
    $15 per contributor/month
    Checked Nov 8, 2026semgrep.dev(opens source in a new tab)