Example AppleScript for re-arranging commonly used windows for a screen resolution. Eg. switching between laptop at 1440x900 and external monitor at 2560x1440 is a big pain, requiring a lot of moving around and resizing of windows. So instead you adapt this script, make a setup-1440x900.applescript and a setup-2560x1440.applescript, and run them…

setup-WxH.applescript

tell application "Flint" to activate -- needs to be in front
tell application "System Events" to tell application process "Flint"
  try
		get properties of window 1
		set size of window 1 to {700, 800}
		set position of window 1 to {1700, 300}
	end try
end tell

tell application "Adium" to activate -- needs to be in front
tell application "System Events" to tell application process "Adium"
	try
		get properties of window 2
		set position of window 2 to {2560 - 111, 21}
		get properties of window 1
		set position of window 1 to {1600, 320}
		set size of window 1 to {700, 800}
	end try
end tell

tell application "Tweetbot" to activate -- needs to be in front
tell application "System Events" to tell application process "Tweetbot"
	try
		get properties of window 2
		set position of window 2 to {50, 400}
	end try
end tell

tell application "Google Chrome" to activate -- needs to be in front
tell application "System Events" to tell application process "Chrome"
	try
		repeat with x from 1 to (count windows)
			get properties of window x
			set position of window x to {625, 21}
			set size of window x to {1250, 2560}
		end repeat
	end try
end tell

tell application "Sublime Text" to activate -- needs to be in front
tell application "System Events" to tell application process "Sublime Text"
	try
		repeat with x from 1 to (count windows)
			get properties of window x
			set position of window x to {250, 21}
			set size of window x to {1250, 2560}
		end repeat
	end try
end tell

tell application "iTerm" to activate -- needs to be in front
tell application "System Events" to tell application process "iTerm"
	try
		get properties of window 1
		set position of window 1 to {150, 100}
		set size of window 1 to {2100, 1200}
	end try
end tell

Works for me with Sublime Text