OpenSSH is described as 'Free version of the SSH connectivity tools that technical users rely on. OpenSSH encrypts all traffic (including passwords) to effectively eliminate eavesdropping, connection hijacking, and other attacks' and is a very popular SSH Client in the network & admin category. There are more than 50 alternatives to OpenSSH for a variety of platforms, including Windows, Mac, Linux, Android and iPhone apps. The best OpenSSH alternative is PuTTY, which is both free and Open Source. Other great apps like OpenSSH are KiTTY, ConnectBot, WindTerm and Xshell.