DotNetSSH is a pure .NET implementation of the SSH2 client protocol suite. DotNetSSH development is alive and active. DotNetSSH is a fork of Tamir's excellent SharpSSH, itself is a port of JCraft's java Jsch.
SharpSSH is a pure .NET implementation of the SSH2 client protocol suite. It provides an API for communication with SSH servers and can be integrated into any .NET application.