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9 emulators 1251 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

    no divergence in all 33 regions · covers 100.0% of the suite

    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
    1.1.0 14 unsupported ; covers 98.9% of the suite

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

    Disclosure: maintained by this board's author

    Grade A

    low divergence (0.2%) in 22 regions · up to 0.5% in the other 11 · covers 98.9% of the suite

    unchanged
    Tier breakdown
    Tier 1 · Core 0.0% diverges
    100.0% covered
    Tier 2 · Complete 0.0% diverges
    95.9% covered 14 unsupported
    Tier 3 · Strict 0.5% diverges
    100.0% covered
    Also built for WebAssembly / OPFS
    • WebAssembly / OPFS
      Grade A

      low divergence (0.2%) in 16 regions · up to 0.5% in the other 17 · covers 88.8%

  3. ExtendDB
    v0.1.11 267 unsupported ; covers 78.7% of the suite

    Runs via: source

    Grade B

    low divergence (1.8%) in 16 regions · up to 2.2% in the other 17 · covers 78.7% of the suite · coverage lowers this row to B

    unchanged
    Tier breakdown
    Tier 1 · Core 0.0% diverges
    100.0% covered
    Tier 2 · Complete 0.0% diverges
    33.6% covered 229 unsupported
    Tier 3 · Strict 5.6% diverges
    90.7% covered 38 unsupported
    Also built for SQLite
    • SQLite
      Grade B

      low divergence (2.1%) in 16 regions · up to 2.4% in the other 17 · covers 82.8% · coverage lowers this row to B

  4. Ministack
    cd4ac9bc91f7 52 unsupported ; covers 95.8% of the suite

    Runs via: pip, Docker, source

    Grade B

    moderate divergence (7.1%) in 6 regions · up to 7.3% in the other 27 · covers 95.8% of the suite

    diverged 10.5 percentage points less, grade C to B
    Tier breakdown
    Tier 1 · Core 0.0% diverges
    100.0% covered
    Tier 2 · Complete 0.3% diverges
    89.6% covered 36 unsupported
    Tier 3 · Strict 21.5% diverges
    96.1% covered 16 unsupported
  5. LocalStack
    2026.8.2 59 unsupported ; covers 95.3% of the suite

    Runs via: Docker, pip, Homebrew, binary

    Grade B

    moderate divergence (8.1%) in 1 regions · up to 8.3% in the other 32 · covers 95.3% of the suite

    unchanged
    Tier breakdown
    Tier 1 · Core 2.8% diverges
    100.0% covered
    Tier 2 · Complete 12.5% diverges
    87.5% covered 43 unsupported
    Tier 3 · Strict 10.7% diverges
    96.1% covered 16 unsupported
  6. Dynalite
    4.0.0 386 unsupported ; covers 69.1% of the suite

    Runs via: npm, npx, embedded

    Grade C

    moderate divergence (11.5%) in 11 regions · up to 11.7% in the other 22 · covers 69.1% of the suite · coverage lowers this row to C

    unchanged
    Tier breakdown
    Tier 1 · Core 10.7% diverges
    100.0% covered
    Tier 2 · Complete 8.1% diverges
    11.6% covered 305 unsupported
    Tier 3 · Strict 15.4% diverges
    80.2% covered 81 unsupported
  7. DynamoDB Local
    ff89bd48ff32 73 unsupported ; covers 94.2% of the suite

    Runs via: Docker, JAR, Maven

    Grade C

    high divergence (15.7%) in 16 regions · up to 15.7% in the other 17 · covers 94.2% of the suite

    unchanged
    Tier breakdown
    Tier 1 · Core 7.5% diverges
    100.0% covered
    Tier 2 · Complete 15.4% diverges
    83.5% covered 57 unsupported
    Tier 3 · Strict 25.9% diverges
    96.1% covered 16 unsupported
  8. Floci
    4e451c39c7bb 61 unsupported ; covers 95.1% of the suite

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

    Grade D

    very high divergence (26.9%) in 6 regions · up to 27.0% in the other 27 · covers 95.1% of the suite

    diverged 0.1 percentage points less
    Tier breakdown
    Tier 1 · Core 10.1% diverges
    100.0% covered
    Tier 2 · Complete 44.3% diverges
    87.0% covered 45 unsupported
    Tier 3 · Strict 32.4% diverges
    96.1% covered 16 unsupported