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9 emulators 1,056 tests

Results as of this run. The arrow shows each target's movement since the previous run it was tested in.

Scored against 33 real regions. 1 dropped, out of scoring until it returns: me-south-1
  1. DynamoDB
    live (AWS)

    Runs via: AWS service

    Grade baseline
    0.0%Divergence
    100.0%Coverage

    no divergence in all 33 regions

    ground truth
    Tier breakdown
    Tier 1 · Core 0.0% diverges
    100.0% covered
    Tier 2 · Complete 0.0% diverges
    100.0% covered
    Tier 3 · Strict 0.0% diverges
    100.0% covered
  2. Dynoxide
    1.0.0 14 unsupported ; covers 98.7% of the suite

    Runs via: npx, Docker, Homebrew, binary, npm, cargo, embedded, GitHub Action, source

    Maintained by the board’s author

    Grade A
    0.0%Divergence
    98.7%Coverage

    no divergence in 2 regions · up to 0.4% in the other 31

    coverage lowers this row to A

    diverged 0.9 percentage points less
    Tier breakdown
    Tier 1 · Core 0.0% diverges
    100.0% covered
    Tier 2 · Complete 0.0% diverges
    93.8% covered 14 unsupported
    Tier 3 · Strict 0.0% diverges
    100.0% covered
    Also built for WebAssembly / OPFS
    • WebAssembly / OPFS
      Grade A

      no divergence in 2 regions · up to 0.4% in the other 31 · covers 87.4% · coverage lowers this row to A

  3. ExtendDB
    untagged-b3af5afc01320f40240e 131 unsupported ; covers 87.6% of the suite

    Runs via: source

    Grade B
    1.7%Divergence
    87.6%Coverage

    low divergence (1.7%) in 21 regions · up to 1.8% in the other 12

    coverage lowers this row to B

    unchanged
    Tier breakdown
    Tier 1 · Core 0.8% diverges
    100.0% covered
    Tier 2 · Complete 0.9% diverges
    51.1% covered 111 unsupported
    Tier 3 · Strict 3.5% diverges
    94.1% covered 20 unsupported
    Also built for SQLite
    • SQLite
      Grade B

      low divergence (2.6%) in 21 regions · up to 2.7% in the other 12 · covers 91.8% · coverage lowers this row to B

  4. Ministack
    6ac5c45a0ba7 44 unsupported ; covers 95.8% of the suite

    Runs via: pip, Docker, source

    Grade B
    11.8%Divergence
    95.8%Coverage

    moderate divergence (11.8%) in 21 regions · up to 11.9% in the other 12

    unchanged
    Tier breakdown
    Tier 1 · Core 5.7% diverges
    100.0% covered
    Tier 2 · Complete 15.0% diverges
    87.7% covered 28 unsupported
    Tier 3 · Strict 18.5% diverges
    95.3% covered 16 unsupported
  5. LocalStack
    2026.7.5 52 unsupported ; covers 95.1% of the suite

    Runs via: Docker, pip, Homebrew, binary

    Grade C
    14.8%Divergence
    95.1%Coverage

    moderate divergence (14.8%) in 25 regions · up to 14.9% in the other 8

    coverage lowers this row to C

    unchanged
    Tier breakdown
    Tier 1 · Core 6.3% diverges
    100.0% covered
    Tier 2 · Complete 15.9% diverges
    84.1% covered 36 unsupported
    Tier 3 · Strict 26.2% diverges
    95.3% covered 16 unsupported
  6. DynamoDB Local
    ff89bd48ff32 65 unsupported ; covers 93.8% of the suite

    Runs via: Docker, JAR, Maven

    Grade C
    15.1%Divergence
    93.8%Coverage

    high divergence (15.1%) in 25 regions · up to 15.2% in the other 8

    unchanged
    Tier breakdown
    Tier 1 · Core 7.6% diverges
    100.0% covered
    Tier 2 · Complete 14.1% diverges
    78.4% covered 49 unsupported
    Tier 3 · Strict 26.5% diverges
    95.3% covered 16 unsupported
  7. Dynalite
    4.0.0 244 unsupported ; covers 76.9% of the suite

    Runs via: npm, npx, embedded

    Grade C
    12.8%Divergence
    76.9%Coverage

    moderate divergence (12.8%) in 25 regions · up to 13.0% in the other 8

    coverage lowers this row to C

    unchanged
    Tier breakdown
    Tier 1 · Core 10.8% diverges
    100.0% covered
    Tier 2 · Complete 12.3% diverges
    17.6% covered 187 unsupported
    Tier 3 · Strict 15.9% diverges
    83.2% covered 57 unsupported
  8. Floci
    bec9b9f74932 53 unsupported ; covers 95.0% of the suite

    Runs via: Docker, Homebrew, install script, Scoop, binary, JAR

    Grade C
    20.8%Divergence
    95.0%Coverage

    high divergence (20.8%) in 21 regions · up to 20.9% in the other 12

    unchanged
    Tier breakdown
    Tier 1 · Core 10.8% diverges
    100.0% covered
    Tier 2 · Complete 31.7% diverges
    83.7% covered 37 unsupported
    Tier 3 · Strict 27.9% diverges
    95.3% covered 16 unsupported