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Since Alfred now has a built-in server running in the background and is paired with iOS devices
How about a clipboard sharing feature?
Straight and seamless. 

I liked this workflow, but the popping-up of the System Preference window is somewhat annoying.
Then I find an alternative, and have been using for quite a long time. 
 
http://michael.thegrebs.com/2013/01/18/alfred2-audio-device/
see comments below it for better functionality.

I know Alfred can be movable by click and hold at certain area. By "certain area" I mean a very thin and tiny frame indicated below in red, making it very difficult to interact with cursor, and even more mission impossible if using customised themes.
 

I saw a tweak made by Mitt@V2EX that actually works.
What you need to do is to make some corrections in the `switch.scpt`
Specifically:
Look for line 
# login panel has 5 buttons  and the very next
exit repeat  delete whatsoever lines in between and replace with the following
set button_count to count of (every button of frontmost_panel) if current_app is not "iTunes" then set button_number to 5 else set button_number to 7 end if if button_count is button_number then set is_error to false

I was not very happy with the existing solutions, so I just created my own.
 
The workflow itself is quite simple just typ in the keyword "lay" (or chose another of your liking) followed by:
full = Maximize left, right, top, bottom = Halves of screen topleft, topright, bottomleft, bottomright = Quaters of screen 11,12,13,21,22,23,31,32,33 = Thrids of screen 11-12,11-13,11-21,11-22 ... = Some other sizes based on thrids ... well the script is quite flexible, so I'm waiting for suggestions

 
For MacOS 10.8 (Mountain Lion):
The workflow itself can be found here:
https://github.com/untoldwind/alfred2-layout/raw/1.0_Mountain_Lion/Layout.alfredworkflow
and (obviously) its sources here:
https://github.com/untoldwind/alfred2-layout
 
For MacOS 10.9 (Mavericks):
The version above does not work (unluckily). An alternative (though somewhat experimental) version can be found here:
Release: https://github.com/untoldwind/alfred2-layout/raw/1.1_Mavericks/Layout.alfredworkflow
Experimental (Bleeding edge): https://github.com/untoldwind/alfred2-layout/raw/master/Layout.alfredworkflow
 
By the way: It is multi-screen-able. Even though you cannot move windows from one screen to another (yet?) the scripts tries to figure out with screen you mean (depending on the size of the visible area).
 
A short note about the implementation:
The script is written in python using PyObjC and the ScriptingBridge. This should be no problem as both is shiped as part of MacOS since 10.5. It the application supports scripting, the window is moved "directly". Unluckily some Applications do not support this, so there is a fallback using "SystemEvents". This only works if you have UI scripting enabled: http://www.macosxautomation.com/applescript/uiscripting/For 10.9 (Mavericks) this has slightly changed. A more detailed description can be found here: http://www.tekrevue.com/2013/06/25/how-to-enable-access-for-assistive-devices-in-os-x-mavericks/ In our case "Alfred 2" requires UIScripting access At the moment there are no hotkeys defined, which should be straight forward though

I liked this workflow, but the popping-up of the System Preference window is somewhat annoying.
Then I find an alternative, and have been using for quite a long time. 
 
http://michael.thegrebs.com/2013/01/18/alfred2-audio-device/
see comments below it for better functionality.

It's like a calculator. I like it.

Hi untoldwind,
 
When i found this workflow i didn't believe it would be so good at what it does. Up until this day i used an app called Divvy for this.

If i find the time i will spend half a day writing a reply on how this workflow has made my life better.
 
Thanks so much!

Since Alfred now has a built-in server running in the background and is paired with iOS devices
How about a clipboard sharing feature?
Straight and seamless. 

Easy enough.
 
Download on GitHub or Packal.

This workflow allows you to switch between multiple Apple accounts quickly and easily in iTunes, App Store and iBooks. 
Also it can automatically turn on iTunes Match (iCloud Music Library) for you after switching (when available).
Passwords will only be stored in Keychain. 
 
Keywords
switch - Switch between Apple accounts in iTunes, App Store and iBooks fill - Autofill the password of your Apple account to the current input area  
Download
v1.5: http://cl.ly/cFsl
v1.4: http://cl.ly/YC2k
v1.3: http://cl.ly/Xqnl
v1.2: http://cl.ly/U5YK
v1.1: http://cl.ly/U4Aw
v1.0: http://cl.ly/U4KK
 
What’s new
Version 1.5 (2015-08-16) - Compatible with iTunes 12.2. - For users who use multiple input languages, now it can change input language to English before switching and autofilling to prevent entering non-ASCII characters, and switch back to previous input language when done. (Thanks to https://github.com/ybian/smartim) - Support non-email Apple ID. Version 1.4 (2014-10-23) - Update to OS X Yosemite's icons and fix some small bugs on Yosemite. Version 1.3 (2014-10-02) - Fix an issue that account and password would be entered into wrong fields in Mac App Store on OS X 10.10 Yosemite. Version 1.2 (2014-02-24) - New keyword "fill" to type in Apple account passwords for you automatically. Version 1.1 (2014-02-23) - Fix a mistake that passwords are stored in the configuration file.  
Packal address
http://www.packal.org/workflow/apple-account-switcher
 
 

 

 

 
Note: Technically, it should be able to support all system languages. But if it doesn't work with your system language, please contact me.

Can you provide url scheme? So we can launch remote within Launch centre pro.
Need screen uncluttered.

If you read further up in the thread, you'll notice that the workflow author hasn't really been around, and, so, unless he shows back up, it's best to think of this amazing workflow as abandonware, meaning that feature requests won't happen.