# union

> Zero-knowledge cross-chain bridging protocol

Union is a trust-minimized zero-knowledge interoperability protocol connecting Cosmos and EVM blockchains for message passing and asset transfers. It uses consensus verification without reliance on trusted third parties, multi-sigs, or oracles. Developers and validators build and run nodes, relayers, and provers using Nix, Rust, and Go.

- Source: https://github.com/unionlabs/union
- Homepage: https://union.build
- Live demo: https://app.union.build/
- License: Apache-2.0
- Built with: Rust 77.1%, TypeScript 6.2%, Svelte 4.3%, Move 3.8%, Other 8.6%
- Stars: 73734
- Forks: 3904
- Contributors: 34
- Last commit: 2026-07-25
- Latest release: bundle-union-1/v1.2.3 (2026-01-26)
- Purpose: Developer tools, Finance & money
- Type: Web, CLI, Library / SDK
- For: Personal, Enterprise

## Worth score: 68/100

How much DigGitHub recommends it, from activity, adoption, docs, license and security signals.

- Popularity: 24/25
- Momentum: 10/20
- Maintenance: 11/25
- Community: 11/15
- Readiness: 12/15

## Downloads

Latest release: [bundle-union-1 v1.2.3](https://github.com/unionlabs/union/releases/tag/bundle-union-1/v1.2.3). Files from the project's GitHub release, not checked by DigGitHub.

Linux:

- [bundle-union-1-x86_64-linux.tar.gz](https://github.com/unionlabs/union/releases/download/bundle-union-1/v1.2.3/bundle-union-1-x86_64-linux.tar.gz) (165 B, 58 downloads)
- [bundle-union-1-aarch64-linux.tar.gz](https://github.com/unionlabs/union/releases/download/bundle-union-1/v1.2.3/bundle-union-1-aarch64-linux.tar.gz) (164 B, 34 downloads)

## Alternatives

- [CCXT](https://diggithub.com/ccxt/ccxt.md): Unified API for 100+ crypto exchanges
- [lightweight-charts](https://diggithub.com/tradingview/lightweight-charts.md): Lightweight financial charts built with HTML5 canvas

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Source page: https://diggithub.com/unionlabs/union
Updated: 2026-10-29