Please see last two sentences:source: http://osticket.com/blog/103NEW! Multi-Lingual Support, Phase 1
Our internationalization efforts is underway - thanks to the community -
we’re happy to report that we now have 35 active translations with over
500 contributors. Starting with osTicket v1.8.1, you can select the
language preference, as a staff member, for the internal help tips. You
can also now select the language of the email templates used for auto
responses to customers and alerts & notices to staff when you create
a new set of templates. The templates for the selected language will be
used instead of English templates provided desired language pack is
installed;
Please note that the interface is not translated at the moment - that will come in phase II. We invite you to join the movement and help us get through Phase II -- (more information to follow)!