As of today, the Luxembourgish spellchecking dictionary as well as the thesaurus are finally available for download on spellchecker.lu. There are packages for OpenOffice.org 2 and 3 as well as for Mozilla Firefox 3 and Mozilla Thunderbird. Additionaly, there is an Ubuntu package as well as a plugin for OOo that checks for a phonological rule called the “Eifeler Regel”, which is specific to Luxembourgish.