hanswolff 

Very fast .NET in-memory message queue that uses TCP/InProc transport

Lightweight offline classification of IP addresses (includes IP ranges of Amazon AWS, Azure, DigitalOcean, OVH)

Simple SMTP Server using .NET 4.5 async pattern

Curve25519 is an elliptic curve, developed by Dan Bernstein, for fast Diffie-Hellman key agreement.

ProtoBuf message serialization / deserialization for RedFoxMQ

Equinox is a state of the art email messaging library targeting the .NET Framework and the Mono Runtime. The library contains full implementations for the IMAP, SMTP and POP3 protocols. In addition the library offers a unique and fully integrated LINQ provider for the IMAP protocol, in short LINQ to... More information

Free .NET HTML parser (C#) is an open source high-performance .NET C# module that was created to parse HTML for links, indexing and other purposes.