External applications

By default FreeFileSync opens the operating system's standard file browser on each mouse double-click by invoking "explorer /select, "%name"" on Windows and "xdg-open "%dir"" on Linux.

However you are free to integrate other external applications into FreeFileSync: navigate to "Menu -> Advanced -> Global settings: External Applications" and add or replace a command string. The first entry is executed when double-clicking a row on main grid while all other entries are only available via right-click context menu. The following macros may be used:

%name   - full file or directory name
%dir    - directory part only
%nameCo - Other side's counterpart to %name
%dirCo  - Other side's counterpart to %dir

Examples:

• Start visual difference tool:
  "C:\Program Files\WinMerge\WinMergeU.exe" "%name" "%nameCo"
   

• Show file in Windows Explorer:
  explorer /select, "%name"
   

• Open file in associated application:
  cmd /c start "" "%name" or simply "%name"
   

• Open console dialog:
  cmd /k cd /D "%dir"
   

Note:
Don't forget to use quotation marks if file names contain spaces!