throttled 0.6.0 by quest, lws, and step76

web - http://intrarts.com/throttledcli.html
github - http://github.com/zquestz/throttled

This is a small daemon to provide bandwidth shaping to Mac OS X and FreeBSD.
If you are using FreeBSD, make sure to have divert socket support
compiled into your kernel.

usage: ./throttled [-Thv] -s speed -r rule [-i increment] [-d port] [-w weight]
-s speed        Max speed in bytes/second (required)
-r rule         IPFW rule number to remove when quit (required)
-i increment    Amount to change the throttle in bytes/sec (USR1 - Decrease | USR2 - Increase)
-T              Enable iTunes TTL fix
-h              This help screen
-v              Version information
-d port         Divert port (optional, may specify more than one)
    -w weight       Weight for the divert port specified prior to this option.

•• Configuring and installing throttled (Binary Install for Mac OS X) 

1. cd to the directory containing throttled in the terminal.
2. edit throttled-startup with your desired configuration.
3. type "sudo ./Install.sh" to install throttled and its StartupItem.
4. to run throttled just type "sudo /usr/local/sbin/throttled-startup"

•• Configuring and installing throttled (Source Install)

1. cd to the directory containing throttled in the terminal.
2. edit throttled-startup with your desired configuration.
3. type "make" ("gmake" on FreeBSD systems)
4. type "sudo make install"
5. to run throttled just type "sudo /usr/local/sbin/throttled-startup"
6. the source install does not include the OS X StartupItem. If you need it run ./Install.sh

For more information you can read the comments in throttled-startup
Thats it... throttled is all set to go.