Github · GitHub Repository Radar
unionlabs union
The trust-minimized, zero-knowledge bridging protocol, designed for censorship resistance, extremely high security, and usage in decentralized finance.
Stars
73,814
Forks
3,884
Watchers: 73,814
Language
License: Apache License 2.0
Repository Radar Score
56 / 100
Growth
- 7d
- +0
- 30d
- +0
- %
- 0.0%
Not enough metric snapshots yet to chart growth for this repository.
Score breakdown
- popularity 88
- growth 0
- activity 55
- freshness 100
- community 90
Need help integrating this stack?
Our team builds with modern open-source stacks. Tell us what you are shipping.
Get a quote →
Union is the hyper-efficient zero-knowledge infrastructure layer for general message passing, asset transfers, NFTs, and DeFi. Its based on Consensus Verification and has no dependencies on trusted third parties, oracles, multi-signatures or MPC. It implements IBC for compatibility with Cosmos chains and connects to EVM chains like Ethereum, Berachain (beacon-kit), Arbitrum, and more.
The upgradability of contracts on other chains, connections, token configurations, and evolution of the protocol will all be controlled by decentralized governance, aligning the priorities of Union with its users, validators, and operators.
| Component | Description | Language(s) |
|---|---|---|
uniond |
The Union node implementation, using CometBLS |
Go |
galoisd |
The zero-knowledge prover implementation | Go Gnark |
voyager |
Modular hyper-performant cross-ecosystem relayer | Rust |
cosmwasm |
CosmWasm smart contract stack | Rust |
light-clients |
Light Clients for various ecosystems | Rust |
unionvisor |
Node supervisor intended for production usage | Rust |
drip |
Faucet for Cosmos chains: app.union.build/faucet | Rust |
evm |
EVM smart contract stack | Solidity |
app |
app.union.build | TypeScript Svelte |
site |
union.build | TypeScript Astro |
TypeScript SDK |
TypeScript SDK for interacting with Union | TypeScript |
Install Nix to reproducibly build any component, and to enter a dev shell with all dependencies:
curl --proto '=https' --tlsv1.2 -sSf -L https://install.determinate.systems/nix | sh -s -- install(Note that some components can only be built on Linux. If you are using macOS, we recommend using OrbStack to easily set up a NixOS VM within two minutes. Most Union developers use macOS with OrbStack, and there is no need to install Nix inside of the NixOS VM.)
You can now reproducibly build any of Union's components from source:
nix build .#uniond -L
nix build .#voyager -L
nix build .#app -L
# to see all packages, run:
nix flake showThe result of whatever you build will be in result/
You can now also enter our dev shell, which has all of the dependencies (cargo, rustc, node, go, etc.) you need to work on any component:
(Don't worry, this will not affect your system outside of this repo)
nix developRun the following to format the entire repo and check your spelling before each PR:
nix run .#pre-commit -LCheck the #developers channel on Union's discord if you need any help with this.
| Network | Mainnets | Testnets |
|---|---|---|
| Arbitrum | arbitrum.42161 |
arbitrum.421614 |
| Babylon | babylon.bbn-1 |
babylon.bbn-test-6 |
| Base | base.8453 |
base.84532 |
| Berachain | berachain.80094 |
berachain.80069 |
| Bob | bob.60808 |
bob.808813 |
| BSC | bsc.56 |
bsc.97 |
| Corn | corn.21000000 |
corn.21000001 |
| Ethereum | ethereum.1 |
ethereum.11155111, ethereum.560048 |
| Osmosis | osmosis.osmosis-1 |
osmosis.osmo-test-5 |
| Sei | sei.pacific-1, sei.1329 |
sei.atlantic-2, sei.1328 |
| Sui | - | sui.4c78adac |
| Union | union.union-1 |
union.union-testnet-10 |
| Xion | xion.xion-mainnet-1 |
xion.xion-testnet-2 |
For the full list see https://docs.union.build/ucs/04/
The official docs are hosted here. Each individual component also has accompanying developer documentation for contributors, which you can find in each README.md.
Languages
Share of the codebase by language, based on repository metadata from the host.
- Rust 77.1%
- TypeScript 6.2%
- Svelte 4.3%
- Move 3.8%
- Solidity 3.6%
- Cairo 1.8%
- Nix 1.4%
- Go 1.2%
- Astro 0.5%
- PLpgSQL 0.1%
- JavaScript 0.1%
- CSS 0.0%
- Shell 0.0%
- HTML 0.0%
- WebAssembly 0.0%
- RenderScript 0.0%
Repository Radar analysis
Deterministic insights derived from public metadata and our observations — not personal testing or reviews.
Why this repository is interesting
- High absolute popularity (73,814 stars) signals broad adoption.
Who should use it
- Developers working primarily with Rust
- Teams exploring AI tooling, agents, or ML infrastructure
- Platform and DevOps engineers
Potential use cases
- Reference or evaluate Rust open-source approaches in this domain
- Prototype AI/agent workflows or study reference architectures
- Evaluate automation, CI/CD, or infrastructure patterns
Strengths
- README present in our index
- Declared license: Apache License 2.0
- Substantial fork count (3,884) suggests reuse and contribution interest
Limitations / considerations
- Insights are derived from public metadata and our observations — not a substitute for code review
What to watch
- Re-check last push, issues, and releases on GitHub before production adoption
Strong signals: Strong community interest
Source: GitHub (public metadata) + Repository Radar analysis. We do not claim ownership of third-party repositories.