Launch a fresh Chrome browser instance each time. Very useful for profiling.

chrome-fresh

#!/bin/sh
# This is quite useful for front-enders, as it will launch a fresh
# Chrome instance with no loaded plugins or extensions that messes
# with your performance profiling or network debugging
#
# Install:
#       install -m 555 ~/Downloads/chrome-fresh  /usr/local/bin/
#
# As an Application, just open the OS X script editor and type
#   do shell script "~/bin/chrome-fresh"
# Save as "chrome-fresh" or something like that. You can now open
# the program in Finder or Spotlight.
# gist: https://gist.github.com/fatso83/2206c5020466393c0926d701f7f4808e

CHROME="/Applications/Google Chrome.app/Contents/MacOS/Google Chrome"
ARGS="$@"

# make a fresh user directory
TMP_USERDIR=$(mktemp -d);

# avoid the dialog on the first startup
touch "$TMP_USERDIR/First Run";

# start chrome using a fresh user directory
"$CHROME"   --user-data-dir="$TMP_USERDIR"  "$ARGS" &

chromePid=$!
sleep 0.5
# bring Chrome
osascript -e 'tell application "System Events"' -e "tell (first process whose its unix id is \"$chromePid\" ) to set frontmost to true" -e 'end tell'