Index: branches/5.2.x/tools/araxis_merge.scpt
===================================================================
diff -u -N
--- branches/5.2.x/tools/araxis_merge.scpt	(revision 0)
+++ branches/5.2.x/tools/araxis_merge.scpt	(revision 16757)
@@ -0,0 +1,28 @@
+on run argv
+	set first_file to item 1 of argv
+	set second_file to item 2 of argv
+
+	tell application "Araxis Merge"
+		-- Start/connect to Merge without displaying any UI
+		launch
+
+		try
+			-- Use an empty document if available
+			set _document to the first empty text document
+		on error
+			-- Create a text comparison document
+			set _document to make text document at end of documents
+		end try
+
+		tell _document
+			-- Tell the document which files to compare
+			set the (first compared file's path) to first_file
+			set the (second compared file's path) to second_file
+
+			-- Compare the files
+			compare items
+		end tell
+
+		activate
+	end tell
+end run
Index: branches/5.2.x/tools/synchronize.sh
===================================================================
diff -u -N -r15660 -r16757
--- branches/5.2.x/tools/synchronize.sh	(.../synchronize.sh)	(revision 15660)
+++ branches/5.2.x/tools/synchronize.sh	(.../synchronize.sh)	(revision 16757)
@@ -1,4 +1,7 @@
 #!/bin/sh
 MAPPED_PATH=`dirname $0`
+PROJECT_ROOT_PATH=`dirname ${MAPPED_PATH}`
 
-open $MAPPED_PATH/../system/export/Custom.textcomparison
+if [[ "$OSTYPE" == "darwin"* ]]; then
+  osascript ${MAPPED_PATH}/araxis_merge.scpt "${PROJECT_ROOT_PATH}/system/export/Custom.lang" "${PROJECT_ROOT_PATH}/modules/custom/install/english.lang"
+fi