OS X comes with it built in, and if you’ve added a third party ssh client it is probably the wonderful iterm and on Windows I’ve been recommending putty, but today I noticed a credible cross platform alternative, the java-based MindTerm. It’s worth a look if you’re on a pc – while you pay a slight performance penalty due to MindTerm being based on Java, you get some handy tools like integrated ssh file transfer in return. On the mac side you’re probably better off with iterm, though again the integrated tools may make you consider switching. If you’re managing a campus lab environment this could be a great choice as it will simplify your support and documentation issues by standardizing on one ssh client.