Top 20 NuGet blockchain Packages

RLP Encoding and decoding
HexTypes for encoding and encoding String, BigInteger, this is specific for Ethereum
Nethereum.Web3 Ethereum Web3 Class Library to interact via RCP with an Ethereum client, for example geth. Including contract interaction, deployment, transaction, encoding / decoding and event filters
Encoding and decoding of ABI Types, functions, events of Ethereum contracts
Nethereum.RPC Ethereum Core RPC Class Library to interact via RCP with an Ethereum client, for example geth.
Keystore generation, encryption and decryption for Ethereum key files using the Web3 Secret Storage definition, https://github.com/ethereum/wiki/wiki/Web3-Secret-Storage-Definition
Nethereum Utilities library, including Sha3 Keccack encoding and Address Checksum
Nethereum signer library to sign and verify messages, RLP and transactions using an Ethereum account
Nethereum Contracts is the core library to interact via RPC with Smart contracts in Ethereum
Nethereum.Accounts Ethereum Accounts and Transaction Managers Class Library
Nethereum.HdWallet uses BIP32 and BIP39 to generate an HD tree of Ethereum compatible addreses from a randomly generated word seeds. This is compatible with keys generated using the standard (m/44'/60'/0'/0/x) usded in BIP44, MetaMask, Jaxx, MyEtherWallet (default), TREZOR App, Exodus or (...
Neo light wallet implementation, using NEP6 standard.
Nethereum.StandardTokenEIP20 Ethereum Service to interact with EIP20 compliant contracts
Netherum.Geth is the extended Web3 library for Geth. including the non-generic RPC API client methods to interact with the Go Ethereum Client (Geth) Admin, Debug, Miner.
Nethereum.ENS Ethereum Name service library
Nethereum.Quorum. Extension to interact with Quorum, the permissioned implementation of Ethereum supporting data privacy created by JP Morgan
Netherum.Parity is the extended Web3 library for Parity, including the non-generic RPC API client methods.
Nethereum.Uport Uport integration library
Cross platform C# library for general Crypto Currency functionality, and communicating with Cryptocurrency exchanges, and Blockchain APIs.
Nethereum.Portable includes all the Nethereum libraries in a single package Web3, Geth, ABI, Contracts, Signing, RPC, Hex, KeyStore, Util, ENS, Quorum and StardardToken