"Max. 12 sessions
Max. 2 SSH tunnels
Max. 4 macros
Max. 360 seconds for Tftp, Nfs and Cron"
Not open source and heavily limited. Unless you pay for Pro, it's pretty useless...
If you just have a handful of servers you can still get a lot done with the free edition, not useless at all by any stretch of the imagination. Paying a few quid a year to keep up with the updates is peanuts compared to the extra productivity we get from it.
http://mobaxterm.mobatek.net/
It's also Pageant aware and will use that as your ssh key agent if you prefer. And vim works properly. We like it so much we pay for the Pro editions.