.TMX File Extension
File TypeTranslation Memory Exchange File
What is a TMX file?
File created in the Translation Memory Exchange (TMX) format, an open XML standard used for exchanging translation memory (TM) data created by Computer Aided Translation (CAT) and localization applications; may save words or phrases that have been translated from one language to another; used for transferring the translation memory between different tools and vendors.
NOTE: The TMX format was developed by the Localization Industry Standards Association (LISA), who then released the standard under the Creative Commons license.