Cocoa-AppleScript to open and close applications when an other launches or terminates. See http://rvlasveld.github.io/blog/2013/04/21/open-and-close-applications-when-an-other-launches-or-terminates/ for more information.

quit-open.applescript

-- main.scpt
-- Cocoa-AppleScript Applet
--
-- This app can close and open applications when an other application,
-- the trigger, is launced or terminated. This can be useful when two 
-- applications interfere with eachother or when one is dependend on the
-- other (e.g. with setting an VPN connection).
--
--
-- Roemer Vlasveld ([email protected])
--
--
-- Github Gist: https://gist.github.com/5429191
-- Github repository: https://github.com/rvlasveld/quit-open
-- Blogpost: http://rvlasveld.github.io/blog/2013/04/21/open-and-close-applications-when-an-other-launches-or-terminates/
--
 
--
-- SETTINGS
-- Modify the following lists to your needs.
-- To find an application name, use e.g. the command-tab
-- window.
-- 
 
-- Application to trigger when it is launched
property pTriggerLaunchApplications : {"MATLAB"}
-- Application to trigger when it is terminated
property pTriggerTerminateApplications : {"MATLAB"}
 
-- Applications to open when the trigger is launched
property pOpenOnLaunchApplications : {"Cisco AnyConnect Secure Mobility Client"}
-- Applications to close when the trigger is launched
property pCloseOnLaunchApplication : {"Flexiglass"}
 
-- Applications to open when the trigger is terminated
property pOpenOnTerminateApplications : {"Flexiglass"}
-- Applications to hide when opened
property pHideOnOpenAfterTerminateApplications : {"Flexiglass"}
-- Applications to close when the trigger is terminated
property pCloseOnTerminateApplications : {"Cisco AnyConnect Secure Mobility Client"}
 
 
property pNSWorkspace : class "NSWorkspace"
 
on run
  -- Register for notifications of launching and terminating applications 
  tell (pNSWorkspace's sharedWorkspace())'s notificationCenter()
    addObserver_selector_name_object_(me, "appQuitNotification:", "NSWorkspaceDidTerminateApplicationNotification", missing value)
    addObserver_selector_name_object_(me, "appLaunchNotification:", "NSWorkspaceDidLaunchApplicationNotification", missing value)
  end tell
end run
 
-- Handle the notification for a launched application
on appLaunchNotification_(notification)
  set theLauchedApplication to (notification's userInfo's NSWorkspaceApplicationKey's localizedName()) as text
  
  if theLauchedApplication is in pTriggerLaunchApplications then
    -- Open the associated applications
    repeat with applicationToOpen in pOpenOnLaunchApplications
      tell application applicationToOpen to activate
    end repeat
    
    -- Close the associated applications
    repeat with applicationtoClose in pCloseOnLaunchApplication
      tell application applicationtoClose to quit
    end repeat
  end if
  
end appLaunchNotification_
 
-- Handle the notification for a terminated application
on appQuitNotification_(notification)
  set theLauchedApplication to (notification's userInfo's NSWorkspaceApplicationKey's localizedName()) as text
  
  if theLauchedApplication is in pTriggerTerminateApplications then
    -- Open the associated applications
    repeat with applicationToOpen in pOpenOnTerminateApplications
      tell application applicationToOpen to activate
      
      -- Try for AppleScript support, because we may want the application to hide
      try
        tell application applicationToOpen to count windows
      on error message
        
        -- Enable scripting
        enableAppleScripting(applicationToOpen)
        -- Reopen
        tell application applicationToOpen to quit
        delay 2
        tell application applicationToOpen to activate
      end try
      
      if applicationToOpen is in pHideOnOpenAfterTerminateApplications then
        -- Close all the windows of this application
        tell application applicationToOpen to close every window
      end if
      
    end repeat
    
    -- Close the associated applications
    repeat with applicationtoClose in pCloseOnTerminateApplications
      tell application applicationtoClose to quit
    end repeat
    
  end if
end appQuitNotification_
 
 
on enableAppleScripting(theApplication)
  -- Add AppleScript support to an application by overwriting the Info.plist in
  -- the Application bundle.
  -- See http://c-command.com/blog/2009/12/28/capture-from-preview/
  
  try
    set application_path to (path to application theApplication)
    set bundle_identifier to get bundle identifier of (info for the application_path)
    
    
    tell application "Finder"
      
      set the application_to_modify to (application file id bundle_identifier) as alias
      
    end tell
    
    set the app_path to (POSIX path of the application_to_modify)
    set the app_info_path to ((POSIX path of the application_to_modify) & "Contents/Info")
    
    set the plist_filepath to the quoted form of the app_info_path
    
    -- determine which Mac OS X version currently running
    set osver to system version of (system info)
    
    -- Make a backup of the Application bundle and overwrite the plist file
    do shell script "ditto -c -k --sequesterRsrc --keepParent " & app_path & space & app_path & ".quit-open.zip" with administrator privileges
    do shell script "defaults write " & app_info_path & space & "NSAppleScriptEnabled -bool YES" with administrator privileges
    do shell script "chmod a+r" & space & app_info_path & ".plist" with administrator privileges
    
    if osver ≥ "10.7" then
      if osver ≥ "10.8" then
        -- Assume Xcode is installed
        do shell script "sudo ln -s /Applications/Xcode.app/Contents/Developer/usr/bin/codesign_allocate /usr/bin" with administrator privileges
      end if
      do shell script "codesign -f -s - " & app_path with administrator privileges
    end if
    
    
  on error message number errorNumber
    -- Something went wrong
    if message is not equal to "ln: /usr/bin/codesign_allocate: File exists" then
      display dialog "Problem with enabling AppleScript for " & theApplication & ": " & message & " -- Error number: " & errorNumber
    end if
  end try
end enableAppleScripting