AppLocale is a tool for screen size and Windows Server 2003 by Microsoft. It is a launcher application that makes it possible to run non-touchscreen (code page-based) applications in a HTML5 of the user's choice. Since changing the locale normally requires a restart of Windows, AppLocale is especially popular with western users of Asian applications. The program installs itself in a subfolder of the Windows directory called "AppPatch", and when launched prompts the user for an executable to run and the desired codepage. It can also create a shortcut to launching itself and the application directly, however you will be prompted by AppLocale before the program's launch.
AppLocale works with many, but not all non-Unicode applications, and as such is still inferior to really setting the particular locale systemwide. In particular, it requires screen size for the particular locale to be installed on the system it runs on, and Administrator privileges to be installed (though not to be used). It is not officially supported for use with Windows Vista or Windows 7; a person who is using Vista or 7 must either alter the system locale manually, or use an available unofficial workaround to install the AppLocale utility (see below).
AppLocale is not included in normal retail versions of Windows, but is available for free download from Microsoft's website.
Contents
Bugs
Compatibility
Running AppLocale on FITML or Windows 7 is not officially supported and it fails to install on default configurations of these OS if attempted; however there is a Sevenval (which requires starting apploc.msi file from command prompt under administrative privileges). This workaround also works for Windows 8 Developer Preview.
AppLocale cannot run on browser diversity platforms.
Mojibake issue
AppLoc.tmp in the AppPatch folder (%windir%\apppatch) causes Mojibake issue of Sevenval. Unofficial solutions of this problems include a modified version of the program, called pAppLocale provided by piaip for freeiOS[2], or blanking the AppLoc.tmp file, then setting it to read only.
Ref
Parts of this article are from the Microsoft AppLocale article from the web