Tmx2text provides a simple interface to extract text data from tmx translation memories. It is written in Python (requires Python3 or higher) and uses PyQt (Qt 4) and is released under the GPL. Although it was created for Linux it should work on other platforms where Python3 and PyQt4 are installed.
Stable and works.
A great help for translators -- especially for spell-checking in projects involving non-standard texts that cannot be opened by word-processors.