Repositories list

• catalyst-libs

  Public
  🌐 A collection of multi-language libraries supporting Catalyst, Cardano’s community-driven innovation platform, enabling secure voting, proposal management, and ecosystem integration.

  dartrustflutter+ 1web3

  Rust

  •

  Apache License 2.0

  •1•4•23•14•Updated Dec 10, 2025Dec 10, 2025

• catalyst-voices

  Public

  input-output-hk/catalyst-voices’s past year of commit activity
  🎙️ Catalyst Voices provides a unified experience and platform including production-ready liquid democracy, meaningful collaboration opportunities & data-driven context for better onboarding & decisions.

  dartrustflutter+ 3web3catalystcardano

  Dart

  •

  Apache License 2.0

  •9•40•259•19•Updated Dec 10, 2025Dec 10, 2025

• acropolis

  Public
  Acropolis modular node architecture & components in Rust

  Rust

  •

  Apache License 2.0

  •5•11•108•7•Updated Dec 10, 2025Dec 10, 2025

• devx

  Public

  input-output-hk/devx’s past year of commit activity
  The Developer Experience Shell - This repo contains a nix develop shell for haskell. Its primary purpose is to help get a development shell for haskell quickly and across multiple operating systems (and architectures).

  hacktoberfest

  Nix

  •

  Apache License 2.0

  •10•52•21•6•Updated Dec 10, 2025Dec 10, 2025

• hackage.nix

  Public

  input-output-hk/hackage.nix’s past year of commit activity
  Automatically generated Nix expressions for Hackage

  Nix

  •18•21•0•0•Updated Dec 10, 2025Dec 10, 2025

• cuddle

  Public

  input-output-hk/cuddle’s past year of commit activity
  CDDL DSL and Testing Tools

  cborcddl

  Haskell

  •

  Apache License 2.0

  •4•6•21•4•Updated Dec 10, 2025Dec 10, 2025

• hermes

  Public

  input-output-hk/hermes’s past year of commit activity
  🏛️ Hermes is a high-availability blockchain voting database that acts as a distributed storage and event processor for voting events, proposals, and actions.

  rustwasmflutter+ 1web3

  Rust

  •

  Apache License 2.0

  •3•20•57•2•Updated Dec 10, 2025Dec 10, 2025

• haskell.nix

  Public
  Alternative Haskell Infrastructure for Nixpkgs

  infrastructurehaskellnix+ 3build-toolhacktoberfestnix-expressions

  Nix

  •

  Apache License 2.0

  •259•614•166•6•Updated Dec 10, 2025Dec 10, 2025

• cardano-parameters

  Public
  Cardano network parameters which are updated regularly from Blockfrost

  Shell

  •

  Apache License 2.0

  •0•1•0•0•Updated Dec 10, 2025Dec 10, 2025

• stackage.nix

  Public
  Automatically generated Nix expressions of Stackage snapshots

  Nix

  •7•12•0•0•Updated Dec 10, 2025Dec 10, 2025

• cardano-clusterlib-py

  Public

  input-output-hk/cardano-clusterlib-py’s past year of commit activity
  Python wrapper for cardano-cli for working with cardano cluster

  Python

  •

  Apache License 2.0

  •12•21•0•1•Updated Dec 9, 2025Dec 9, 2025

• catalyst-ci

  Public
  Common CI workflows for Project Catalyst

  Python

  •

  Apache License 2.0

  •0•7•20•8•Updated Dec 9, 2025Dec 9, 2025

• ouroboros-leios

  Public

  input-output-hk/ouroboros-leios’s past year of commit activity
  Documentation and tools relating to the design and prototyping of Ouroboros Leios

  blockchainscalingcardano

  Jupyter Notebook

  •9•31•66•12•Updated Dec 9, 2025Dec 9, 2025

• lace

  Public

  input-output-hk/lace’s past year of commit activity
  The Lace Wallet.

  cryptowalletlace+ 1cardano

  TypeScript

  •

  Apache License 2.0

  •16•40•5•26•Updated Dec 9, 2025Dec 9, 2025

• partner-chains

  Public

  input-output-hk/partner-chains’s past year of commit activity
  Substrate node with capability of communicating with Cardano network

  Rust

  •

  Apache License 2.0

  •25•65•4•21•Updated Dec 9, 2025Dec 9, 2025

• plutus-halo2-verifier-gen

  Public
  Tool to enable proof verification on Cardano blockchain

  Rust

  •

  Apache License 2.0

  •3•5•7•2•Updated Dec 9, 2025Dec 9, 2025

• mithril

  Public

  input-output-hk/mithril’s past year of commit activity
  Stake-based threshold multi-signatures protocol

  rustblockchainscalability+ 6mithrilmultisigcardanocardano-nodemulti-signaturesmulti-signature-aggregation

  Rust

  •

  Apache License 2.0

  •52•146•118•6•Updated Dec 9, 2025Dec 9, 2025

• polkadot-sdk

  Public
  The Parity Polkadot Blockchain SDK

  Rust

  •1.1k•1•0•1•Updated Dec 9, 2025Dec 9, 2025

• ouroboros-phalanx-protocol

  Public
  Documentation, Specification, and Design for an Extended Anti-Grinding Feature in Ouroboros Praos and Beyond

  securityblockchainconsensus+ 4scalingconsensus-algorithmcardanoouroboros

  Python

  •

  Apache License 2.0

  •0•2•0•0•Updated Dec 9, 2025Dec 9, 2025

• catalyst-core

  Public

  input-output-hk/catalyst-core’s past year of commit activity
  ⚙️ Core Catalyst Governance Engine and utilities.

  rustweb3voting-system

  Rust

  •

  Apache License 2.0

  •14•40•8•4•Updated Dec 9, 2025Dec 9, 2025

• kes-agent

  Public
  KES agent provides a solution for storing KES keys in-process, in order to allow them to be erased securely and enable forward security in the Cardano blockchain.

  Haskell

  •

  Apache License 2.0

  •6•1•17•2•Updated Dec 9, 2025Dec 9, 2025

• capkgs

  Public
  Content Addressed Packages

  nixcontent-addressed

  Crystal

  •

  Apache License 2.0

  •3•6•0•0•Updated Dec 9, 2025Dec 9, 2025

• ouroboros-leios-formal-spec

  Public
  Formal specification of the Ouroboros Leios protocol variants

  Agda

  •

  Apache License 2.0

  •0•4•5•3•Updated Dec 9, 2025Dec 9, 2025

• CHA-react-FE-template

  Public template

  input-output-hk/CHA-react-FE-template’s past year of commit activity
  TypeScript

  •0•2•0•2•Updated Dec 9, 2025Dec 9, 2025

• catalyst-forge-platform

  Public
  Apache License 2.0

  •0•0•0•0•Updated Dec 9, 2025Dec 9, 2025

• atala-prism

  Public

  input-output-hk/atala-prism’s past year of commit activity
  Atala PRISM Node (DLT)

  Scala

  •

  Apache License 2.0

  •1•5•4•2•Updated Dec 8, 2025Dec 8, 2025

• Lean-blaster

  Public
  SMT-based reasoning core for Lean4

  Lean

  •

  Apache License 2.0

  •1•10•8•2•Updated Dec 8, 2025Dec 8, 2025

• innovation-cavefish

  Public

  input-output-hk/innovation-cavefish’s past year of commit activity
  Light client prototype feature type for UTxO- based blockchains for submitting transactions privately

  TeX

  •

  Apache License 2.0

  •0•0•31•3•Updated Dec 8, 2025Dec 8, 2025

• iog-agda-prelude

  Public
  Supplementary types and functions for the Agda prelude

  agdaformal-methods

  Agda

  •

  Apache License 2.0

  •1•4•1•1•Updated Dec 8, 2025Dec 8, 2025

• constrained-generators

  Public
  Framework for generating constrained random data using a subset of first order logic

  Haskell

  •

  Apache License 2.0

  •0•3•16•3•Updated Dec 8, 2025Dec 8, 2025