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Open source DuckDB alternatives: 1 app ranked by verified data

Facts checked Nov 8, 2026AppBreakup editorialHow we rank

1 of the 5 DuckDB alternatives we track are open source. PostgreSQL ranks highest, with facts last verified Nov 8, 2026.

Quick comparison

#AppPricingVerified priceOpen sourcePlatformsVerified factsScore
1PostgreSQL logoPostgreSQLOpen source—YesLinux, macOS, Windows +15 of 554.4
  1. PostgreSQL logo

    1. PostgreSQLTop pick

    Best for: Developers and teams who want a free, standards-minded relational database that scales with their app.

    Open sourceSelf-hostableLinux, macOS, Windows, Self-hosted

    54.4

    score / 100

    Why switch from DuckDB

    A general-purpose database for both app data and analytics, with a SQL dialect DuckDB borrows from.

    Pros

    • Strong SQL standards support and full ACID transactions
    • Rich types: JSONB, arrays, ranges, plus PostGIS for maps
    • Highly extensible with custom types and functions
    • Permissive licence and community governance, not one vendor

    Cons

    • Running replication, failover and major upgrades yourself takes expertise
    • Connection handling often needs a pooler under heavy load
    • No official GUI; you pick a separate client
    Visit PostgreSQL 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 PostgreSQL a good DuckDB alternative?

    Verified facts

    5 of 5 verified
    License
    PostgreSQL License (BSD/MIT-like)
    Checked Nov 8, 2026postgresql.org(opens source in a new tab)
    Origins
    1986, UC Berkeley POSTGRES project
    Checked Nov 8, 2026postgresql.org(opens source in a new tab)
    ACID-compliant
    Since 2001
    Checked Nov 8, 2026postgresql.org(opens source in a new tab)
    JSON support
    JSON/JSONB
    Checked Nov 8, 2026postgresql.org(opens source in a new tab)
    Platforms
    Linux, macOS, Windows, BSD, Solaris
    Checked Nov 8, 2026postgresql.org(opens source in a new tab)