sorryfreeLast reviewed 2026-09-13

Galois

Direct answerGalois 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.
Website
https://www.galois.com
Headquarters
Portland, Oregon, United States
Focus
Industrial formal verification: Cryptol, SAW, zkLean; verified AWS-LC, s2n, BLST, Soroban
Index position
#2 of 11
Founded
1999

Services

Frameworks this firm builds or uses

Cryptol and SAW, zkLean, LLZK, Lean 4 and Mathlib.

Public evidence

Best fit

Choose Galois for verifying an existing optimised C or assembly library against a specification, or for lookup-centric ZK systems in zkLean.

Other firms on this index

zkSecurity, Veridise, Nethermind (Formal Verification team), Formal Land, Cryspen, Reilabs, Runtime Verification, Certora, Trail of Bits, Symbolic Software