12. The method of claim 10 wherein the designated file format comprises extensible markup language localization interchange file format (XLIFF).
10. A method comprising: ascertaining one or more languages selected by developer for translations of an application under development using an IDE; and during a build of the application via the IDE, creating updated localization files for each of the selected languages in a designated file format established to facilitate translations used to generate a single multilingual resource file for the application, wherein creation of the updated localization files comprises: producing a log file in a system format that describes resources for the build of the application; parsing the log file to identify and extract localizable resources in the build; converting the extracted localizable resources to generate a source resource file for the build in the designated file format; and merging the source resource file with target localization files included in the project for the one or more languages to form localization files that are updated for the build, wherein the merging comprises, for each target localization file: comparing resources between the source resource file and the target localization file to find matching resources; and updating the resources in the source resource file with matching resources from the target localization file to form an updated version of the target localization file that incorporates modifications to resources for the build from the source resource file and previously translated resources from the target localization file.