Nethereum
An open-source .NET integration library for Ethereum enabling cross-platform blockchain application development.
Overview
Nethereum is an open-source .NET framework designed to simplify Ethereum blockchain integration for developers using the .NET ecosystem. It provides modular libraries that cover smart contract interaction, cryptographic wallet management, blockchain data handling, and decentralized app (dapp) development. Targeted at developers familiar with C#, F#, or VB, Nethereum enables cross-platform deployment across Windows, Linux, macOS, mobile platforms (iOS and Android), cloud services, gaming consoles, and IoT devices. This broad compatibility allows .NET developers to build blockchain solutions without switching programming languages or environments.
The tool supports interaction with Ethereum clients such as Geth, Parity, and Quorum, as well as Layer 2 solutions like Optimism and Arbitrum, and other EVM-compatible chains. Nethereum offers features like JSON RPC and IPC communication, smart contract deployment and function calls, event filtering, ABI encoding/decoding, HD wallet generation, and external signer integration (e.g., Azure, AWS). It also includes utilities for transaction signing, key storage compliant with Web3 standards, and code generation from smart contract ABIs to accelerate development.
What sets Nethereum apart is its deep integration with the .NET ecosystem, including Visual Studio and Visual Studio Code plugins for Solidity smart contract code generation, and support for Unity3D game engine integration. This makes it a preferred choice for developers building blockchain-enabled games or enterprise applications within .NET. The project is actively maintained with over 70,000 NuGet package downloads and a vibrant community on Discord and GitHub. Developers can quickly get started using NuGet packages, explore executable tutorials via Nethereum Workbooks, or try samples in the browser-based Nethereum Playground.
Nethereum also supports advanced blockchain data processing with libraries for Azure Table Storage integration and blockchain event streaming. Its extensible architecture and comprehensive documentation make it suitable for both prototyping and production-grade blockchain applications. Developers can leverage existing smart contract libraries for tokens, ENS, and Gnosis Safe, or build custom solutions with simplified account lifecycle management and RPC call interception.
The Problem
Developers using the .NET ecosystem face challenges integrating Ethereum blockchain functionality due to the lack of native, comprehensive libraries. Managing smart contracts, wallets, and blockchain data across multiple platforms requires complex setup and often forces developers to switch languages or frameworks.
The Solution
Key Features
Smart Contract Interaction
Simplifies deployment, function calls, event filtering, and decoding with reusable contract libraries.
Wallet and Key Management
Supports HD wallets, external signers, key storage compliant with Web3 standards, and account lifecycle management.
Cross-Platform Compatibility
Compatible with Windows, Linux, macOS, iOS, Android, Xbox, Hololens, and IoT devices.
Unity3D Integration
Enables blockchain-enabled game development with Unity3D across multiple platforms.
Key Strengths
How Developers Use Nethereum
Enterprise Blockchain Application Development
Building permissioned blockchain solutions and dapps using .NET for industries requiring integration with Ethereum and Quorum networks.
Cross-Platform Blockchain Games
Developing Ethereum-integrated games using Unity3D and Xamarin targeting consoles, mobile, and desktop platforms.
Decentralized Wallet and Token Management
Creating secure, cross-platform wallets and token management apps leveraging HD wallets, external signers, and smart contract libraries.
Works Well With
Ethereum
Ship faster than your competition
Free RPC across 77+ chains. Spin up an endpoint in under 30 seconds.
Compare
View Full Comparison| Composability | |||
| Cross-Chain | |||
| Customizability | |||
| Developer Support | |||
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Pricing
Open Source | |
|---|---|
| Price (Monthly) | Free |
| Price (Annual) | Free |
| Messaging | N/A |
| Support | Community support via Discord and GitHub |
| Analytics |
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Resources
Nethereum offers extensive resources including official documentation, executable tutorials, code samples, and video guides to help developers quickly onboard and build Ethereum applications using .NET.