I'm a Linux user, and I use iTerm when I'm on a Mac and ConEmu on Windows. Are there some features I'm missing out on?
ROXterm, LilyTerm and Sakura judging from screenshots... per: http://www.tecmint.com/linux-terminal-emulators/
I'd spent some time trying to find an "alternative to iterm for linux" and the like, coming up pretty short.