Nethereum

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.