MacOS comes with an ssh client built in, and if you've added a third party client it is probably the wonderful iterm. On Windows, I've been recommending putty for years, but recently I discovered a credible cross-platform alternative, the java-based MindTerm. It's worth a look, if you're on Windows or supporting a cross-platform environment. While users will pay a slight performance penalty due to MindTerm being based on Java, they will get some handy tools, such as integrated ssh file transfer, in return. On the Mac side you're probably better off with iterm, though again the integrated file transfer tools may make you consider switching. Managing a mixed campus environment, MindTerm could be a great choice as it will simplify your support and documentation issues by standardizing on one ssh client. However, you should read the licensing terms carefully--they allow for only 100 seats among other stipulations.