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    • Create docker image for running SysMLv2 with Jupyter
      Jupyter Notebook
      GNU Lesser General Public License v3.0
      21001Updated Dec 9, 2024Dec 9, 2024
    • NLP

      Public
      Natural Language Processing tool used to build domain models
      TeX
      1110Updated Oct 15, 2024Oct 15, 2024
    • Main source code repository of the Tamarin prover for security protocol verification.
      Haskell
      GNU General Public License v3.0
      137000Updated Oct 8, 2024Oct 8, 2024
    • Formal models of cryptography.
      0000Updated Sep 28, 2024Sep 28, 2024
    • Glossary of election terms including those used in the VVSG.
      7100Updated Aug 20, 2024Aug 20, 2024
    • JMLUnitNG

      Public
      An automated unit test framework for JML-annotated Java projects.
      Java
      Other
      2210Updated Feb 23, 2023Feb 23, 2023
    • Documents Free & Fair has generated, including responses to RFPs, RFIs, and other opportunities.
      1200Updated Nov 2, 2021Nov 2, 2021
    • Qubie

      Public
      Qubie is a passive, privacy-preserving data gathering system that helps election officials better understand the flow of voters at their polling places.
      C
      Other
      51620Updated Jul 13, 2020Jul 13, 2020
    • This repository contains a specification describing the ElectionGuard software development kit, including cryptographic protocols and implementation decisions, as well as an overview of voting system components and functionality.
      JavaScript
      MIT License
      14100Updated Mar 6, 2020Mar 6, 2020
    • ElectionGuard is a set of open source software components that can be used to create and publish end to end veriable elections as well create a publishable artifact for ballot comparison audits.
      MIT License
      129000Updated Feb 28, 2020Feb 28, 2020
    • This repository implements the ElectionGuard API using C. It includes all major functions of the ElectionGuard SDK, including key ceremony, ballot encryption, encrypted ballot tally, and partial decryptions for knowledge proofs of trustees.
      C
      MIT License
      25000Updated Feb 22, 2020Feb 22, 2020
    • The ElectionGuard SDK Reference Verifier enables the verification of election ballots, tallies, and proofs generated by the ElectionGuard SDK
      Rust
      MIT License
      21000Updated Feb 13, 2020Feb 13, 2020
    • OpenRLA

      Public
      Free & Fair's open source RLA support software.
      Coq
      Other
      34351Updated Dec 31, 2018Dec 31, 2018
    • Software to facilitate risk-limiting audits at the state level, developed for the state of Colorado.
      Java
      Other
      8218211Updated Nov 5, 2018Nov 5, 2018
    • Archive of existing evoting systems created by others.
      HTML
      51930Updated Aug 22, 2018Aug 22, 2018
    • STAR-Vote

      Public
      STAR-Vote: A Secure, Transparent, Auditable, and Reliable Voting System.
      Haskell
      Other
      62900Updated Jun 26, 2018Jun 26, 2018
    • OpenCount

      Public
      OpenCount vote counting application
      Python
      Other
      5700Updated Dec 19, 2017Dec 19, 2017
    • A repository containing books, papers, reports, and standards relevant to our R&D.
      0000Updated Jul 15, 2017Jul 15, 2017
    • Various kinds of analysis on raw election data.
      R
      Other
      0000Updated May 16, 2017May 16, 2017
    • eRAISE

      Public
      An Eclipse based Development Environment for the RAISE formal method.
      TeX
      Other
      1000Updated May 16, 2017May 16, 2017
    • BON

      Public
      BONc is a parser and typechecker for the Business Object Notation (BON).
      Yacc
      Other
      0000Updated May 16, 2017May 16, 2017
    • A web-based demonstration that illustrates the relative security of various voting methods in common use in the United States.
      Java
      Other
      0000Updated May 16, 2017May 16, 2017
    • Tabulator

      Public
      The Free & Fair Tabulator tallies digital Cast Vote Records, specified in an open JSON-based format, into an election result. The Tabulator is formally specified in BON and Coq, and is implemented via extraction to Haskell from Coq and in SPARK.
      Coq
      Other
      0300Updated May 16, 2017May 16, 2017
    • Some formalized developments of ranked-choice and instant-runoff voting schemes in Coq
      Coq
      Other
      0300Updated May 16, 2017May 16, 2017
    • RLA

      Public
      Artifacts Relating to Risk Limiting Audits
      Coq
      Other
      1100Updated May 16, 2017May 16, 2017
    • DIVS

      Public
      A rigorously engineered tabulator for the Danish list-based voting scheme.
      Java
      Other
      0000Updated May 16, 2017May 16, 2017
    • Votail

      Public
      Votail is a rigorously engineered, formally verified tabulator for Irish PR-STV elections.
      HTML
      Other
      3100Updated May 16, 2017May 16, 2017
    • KOA

      Public
      KOA is a remote voting system experiment conducted in the Netherlands circa 2004.
      Java
      Other
      0100Updated May 16, 2017May 16, 2017
    • BON_IDE

      Public
      The BON IDE for Eclipse.
      Java
      Other
      0000Updated May 16, 2017May 16, 2017
    • An Eclipse plugin that supports semantic properties and their refinements between BON specification and Java implementation.
      Java
      Other
      0000Updated May 16, 2017May 16, 2017