Translation Memory eXchange

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Translation Memory eXchange (TMX) is an XML specification for the exchange of translation memory (TM) data between computer-aided translation and localization tools with little or no loss of critical data.

TMX was originally developed and maintained by OSCAR (Open Standards for Container/Content Allowing Re-use), a special interest group of LISA (Localization Industry Standards Association), and first released in 1997.[1] Specification 1.4b of 2005[2] remained current as of 2020.[3] It allows the original source and target documents to be recreated from the TMX data. A working draft of TMX 2.0 was released for public comment in March 2007[4][5] but no work was done on the new version; in March 2011 LISA was declared insolvent[3] and as a result its standards were moved under a Creative Commons license and the standards specification relocated.[2]

TMX forms part of the Open Architecture for XML Authoring and Localization (OAXAL) reference architecture.


An example of a TMX document with one entry:

<tmx version="1.4">
    creationtool="XYZTool" creationtoolversion="1.01-023"
    datatype="PlainText" segtype="sentence"
    adminlang="en-us" srclang="en"
      <tuv xml:lang="en">
        <seg>Hello world!</seg>
      <tuv xml:lang="fr">
        <seg>Bonjour tout le monde!</seg>


  1. ^ "TMX Format Specifications Version 1.0". Open Standards for Container/Content Allowing Re-use (OSCAR). 25 November 1997. Retrieved 25 June 2014.
  2. ^ a b Savourel, Yves; Lommel, Arle (26 April 2005). "TMX 1.4b Specification". The Localisation Industry Standards Association (LISA). Archived from the original on 12 January 2013.
  3. ^ a b "LISA OSCAR Standards". Globalization and Localization Association (GALA). Retrieved 25 June 2014.
  4. ^ "TMX: Translation Memory eXchange -TMX 2.0 released for public comment". LISA Standards Association. 28 March 2007.
  5. ^ "TMX 2.0 Specification - OSCAR Working Draft". LISA Standards Association. 28 March 2007.