# matter-labs/zksync-era

zkSync era

Repository: https://github.com/matter-labs/zksync-era
Canonical: https://ross.abutalabs.com/products/zksync-era
Language: Rust
License: Apache-2.0
License Family: permissive
Last push: 2026-08-26T20:02:17+00:00

## Health v2 (maintenance only)
Score: 92/100 (v2, computed 2026-09-03T02:39:23.370411+00:00)
- activity 99, release rhythm 84, longevity 92
- inputs: {"age_days": 1295, "days_push": 7, "days_rel": 25, "gap_med": 4, "n_releases_24m": 120}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 3232, forks 2181 (observed 2026-08-28T04:07:50.195958+00:00)

## What it is
ZKsync Era is a ZK rollup layer 2 protocol for scaling Ethereum using zero-knowledge proofs, implemented primarily in Rust. It is EVM-compatible (Solidity/Vyper) and includes an LLVM-based compiler toolchain for smart contracts.

## Use cases
- deploy a zk rollup layer 2 on ethereum
- run a zksync era node
- redeploy solidity contracts to a zk rollup without refactoring
- compile smart contracts to zero-knowledge circuits
- scale ethereum dapps with zk proofs
- fork a zk rollup for a custom chain

## When to choose
- you need EVM-compatible smart contract deployment on a ZK rollup
- you want to operate or fork a production-proven layer 2 with active development and audits
- you need an LLVM-based compiler path for writing contracts in languages beyond Solidity

## When to avoid
- you need a simple, low-complexity sidechain or optimistic rollup instead of ZK technology
- you cannot track security updates - the project warns that forking while in alpha risks missing critical fixes
- you only need to interact with Ethereum layer 1 without layer 2 scaling

## Facets
- artifact type: application
- maturity: active
- function: compiler, cryptography, blockchain, rpc, api-framework, developer-tools
- domain: blockchain, microservices, security, developer-tools
- platform: rust, self-hosted
- tags: zk-rollup, ethereum, layer-2, zero-knowledge-proofs, solidity, evm-compatible, smart-contracts, llvm, scaling, cryptocurrency, linux, macos, docker

## Member repositories
- matter-labs/zksync-era (main) score 92

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:07:50.195958+00:00.
- Health v2: computed from the inputs above; adoption is never an input.
- Inferred fields (summary, facets, guidance): AI-extracted, prompt v1, taxonomy v1, on 2026-08-30T07:24:37.844150+00:00, confidence not recorded.
  - readme: https://github.com/matter-labs/zksync-era (fetched 2026-08-28T04:07:50.195958+00:00, sha 2f8cd8b2389a)
- Data as of 2026-08-30T08:39:29.467469+00:00.