I just had a look again at the list of supported languages and then at the usage statistics. A lot of languages are not maintained, but some languages are not maintained and not even used:
- For Malayalam, my web analytics tool shows there have been 4 checks of Malayalam texts on languagetool.org in November 2016. The last non-technical change to its grammar.xml file was in 2010.
- For Lithuanian, there have also been 4 checks on languagetool.org in November. There are only 4 rules in its grammar.xml file. That file had its last non-technical modification in 2007.
I will deprecate these languages for the next release (3.6) and remove them in 3.7. Of course, if a maintainer shows up who takes care of one of these languages, this point is moot and the languages will not be removed.