# Nethereum/Nethereum

Ethereum .Net cross platform integration library

Repository: https://github.com/Nethereum/Nethereum
Canonical: https://ross.abutalabs.com/products/nethereum
Homepage: http://nethereum.com
Language: C#
License: MIT
License Family: permissive
Topics: ethereum, nethereum, rpc, abi, rlp, signing, blockchain, ethereum-client, cross-platform, quorum, geth, parity
Last push: 2026-07-11T03:58:49+00:00

## Health v2 (maintenance only)
Score: 88/100 (v2, computed 2026-09-03T02:20:16.233290+00:00)
- activity 92, release rhythm 76, longevity 100
- inputs: {"age_days": 3936, "days_push": 53, "days_rel": 160, "gap_med": 15, "n_releases_24m": 12}
- flags: none
- formula: round(0.45*activity + 0.35*rhythm + 0.20*longevity); archived -> min(score, 10)

## Adoption (not part of the score)
Stars 2256, forks 745 (observed 2026-08-28T04:06:31.380620+00:00)

## What it is
Nethereum is the .NET integration platform for Ethereum and EVM-compatible blockchains, offering 130+ NuGet packages covering RPC access, smart contract interaction, transaction signing, an in-process EVM simulator, DevChain, blockchain indexing, and ERC-4337 account abstraction. It targets netstandard 2.0 through .NET 10 and Unity, running on Windows, Linux, macOS, Android, iOS, WebAssembly, and game consoles.

## Use cases
- query eth and erc-20 token balances from a .net application
- send ethereum transactions with automatic gas and nonce management
- interact with smart contracts from c# using typed services
- sign messages and eip-712 typed data with hd wallets or hardware wallets
- build a blockchain data indexer that persists events to postgresql
- run a local in-process ethereum dev chain for testing
- build an erc-4337 account abstraction bundler
- integrate ethereum wallets into unity games or blazor dapps

## When to choose
- you are building .NET (C#/F#/VB) applications that need to talk to Ethereum or EVM chains
- you want a full-stack web3 solution in .NET including wallets, indexing, and dev tooling
- you need cross-platform blockchain support including Unity, Blazor, and mobile
- you want an in-process EVM simulator or local dev chain without Docker

## When to avoid
- your stack is JavaScript/TypeScript — ethers.js, viem, or web3.js are more natural
- you only need a lightweight JSON-RPC client and don't want a large multi-package ecosystem
- you target non-EVM blockchains like Bitcoin or Solana

## Facets
- artifact type: library
- maturity: active
- function: sdk, http-client, websocket, serialization, cryptography, developer-tools, etl, simulation
- domain: blockchain, developer-tools, fintech, cross-platform, gaming-tools
- platform: dotnet, cross-platform, windows, wasm, game-engine
- tags: ethereum, web3, smart-contracts, evm, account-abstraction, erc-4337, erc-20, nft, defi, wallet, blazor, unity, blockchain-indexing, devchain, abi, rlp, signing, quorum, geth, parity, cryptocurrency, linux, macos, android, ios

## Member repositories
- Nethereum/Nethereum (main) score 88

## Provenance
- Observed fields: from GitHub, fetched 2026-08-28T04:06:31.380620+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 2026-08-30T02:43:41.672081+00:00, confidence not recorded.
  - readme: https://github.com/Nethereum/Nethereum (fetched 2026-08-28T04:06:31.380620+00:00, sha 4786d32fb852)
  - homepage: http://nethereum.com (fetched 2026-08-29T10:23:41.458129+00:00, sha 97e1a9a4f741)
  - site_page: https://docs.nethereum.com (fetched 2026-08-29T10:23:41.467749+00:00, sha d362340b3a42)
  - site_page: https://docs.nethereum.com/docs/devchain/overview (fetched 2026-08-29T10:23:41.469804+00:00, sha cfd2ae733129)
  - site_page: https://docs.nethereum.com/docs/what-do-you-want-to-do (fetched 2026-08-29T10:23:41.471553+00:00, sha b9c5070fad2d)
  - site_page: https://docs.nethereum.com/docs/core-foundation/overview (fetched 2026-08-29T10:23:41.473307+00:00, sha f3957c7b49b4)
  - site_page: https://docs.nethereum.com/docs/smart-contracts/overview (fetched 2026-08-29T10:23:41.475339+00:00, sha f995855c7437)
  - site_page: https://docs.nethereum.com/docs/evm-simulator/overview (fetched 2026-08-29T10:23:41.477137+00:00, sha 975d01614dba)
  - site_page: https://docs.nethereum.com/docs/account-abstraction/overview (fetched 2026-08-29T10:23:41.478861+00:00, sha ed358b4558ad)
  - site_page: https://docs.nethereum.com/docs/data-and-indexing/overview (fetched 2026-08-29T10:23:41.480587+00:00, sha e893699eb6c7)
- Data as of 2026-08-30T08:39:29.467469+00:00.