{
  "slug": "galois",
  "name": "Galois",
  "url": "https://www.galois.com",
  "hq": "Portland, Oregon, United States",
  "founded": "1999",
  "focus": "Industrial formal verification: Cryptol, SAW, zkLean; verified AWS-LC, s2n, BLST, Soroban",
  "summary": "Galois is a formal-methods research and engineering firm that builds Cryptol, SAW and zkLean and has delivered verification of AWS-LC and s2n (with NSym for AArch64), the BLST BLS library, Stellar's Soroban (Formal Verso) and Halo2 recursion work with IOG. Its zkLean framework is funded by the Ethereum Foundation.",
  "why_first": "",
  "services": [
    "Implementation verification of C, assembly and Rust cryptography with Cryptol and SAW",
    "ZK circuit verification in Lean with zkLean, including Jolt-style lookup systems",
    "Long-horizon research contracts (DARPA, AWS) in high-assurance cryptography"
  ],
  "tools": [
    "cryptol-saw",
    "zklean",
    "llzk",
    "lean4"
  ],
  "evidence": [
    [
      "AWS-LC verification",
      "https://github.com/awslabs/aws-lc-verification"
    ],
    [
      "zk-lean repository",
      "https://github.com/GaloisInc/zk-lean"
    ],
    [
      "SAW",
      "https://github.com/GaloisInc/saw-script"
    ]
  ],
  "fit": [
    "Choose Galois for verifying an existing optimised C or assembly library against a specification, or for lookup-centric ZK systems in zkLean."
  ],
  "rank": 2,
  "page": "https://sorryfree.com/firms/galois/",
  "updated": "2026-09-13"
}