@jellytriangle IE10 is supported as well, but Chrome's internal spellchecker/use of spellcheck attribute is buggy.
Language Packs Archive
Community contributed language packs for JCE
Downloading and installing community contributed language files is done so at your own risk. Widget Factory Limited are not responsible for the content, accuracy or suitability of any of the language packs provided by community members and no support will be provided for them.
Language Packs Files