A list of SSH clients for Windows from a recent /r/Sysadmin Reddit thread.
http://kitty.9bis.net/
https://puttytray.goeswhere.com/
https://sites.google.com/a/mremoteng.org/main/
Source: http://www.reddit.com/r/sysadmin/comments/1qjjhs/ssh_clients/
http://code.google.com/p/superputty/ – This one is a wrapper that lets you created a tabbed interface to putty.