XANADU a.s. published version 1.3 of the TRANS add-on utility for AutoCAD. Here are some details:
You can use the TRANS add-on utility to translate drawing texts to another language – either manually, or CAT-assisted (e.g. with Trados or other CAT tool), or automatically (via Google Translate).
TRANS extracts (exports) Text and Mtext entities from AutoCAD drawings into a text file (you can then translate it using any automated text translation tool or by human translator) and then puts the translated texts back into your DWG drawing (to the original places/positions and with the original properties). The automatic mode employs the API of the online tool "Google Translate" to perform language translation between the specified language pair.
The utility supports batch processing and translating the contents using Trados (or any other TEnT, since the format is RTF with tags). The tool does not support Unicode. A free trial version is available for download. The commercial version costs 39 USD.