lxzrz: Communication package providing the X, Y, and ZMODEM file transfer protocols
http://www.ohse.de/uwe/software/lrzsz.html
kibitz: similar to multi-user mode of screen
http://expect.nist.gov/
http://nails.blog.51cto.com/640492/138028
dstat: Dstat is a versatile replacement for vmstat, iostat and ifstat
http://dag.wieers.com/home-made/dstat/
