YouTrack is a multipurpose bug tracker that has French, Russian, Spanish, German, and in future - many other versions.
This programm not only allows to use 4 language versions but also provide an opportunity to translate programm into the new language that user needs. This becomes real because of the special function - Translating YouTrack UI.
YouTrack has a lot of benefits, among them - new design of all menu buttons, the simplicity of communication with customers (user can simply drag and drop files onto the screen of creation or editing of task), constant visibility of field names and so on.
More over, YouTrack has an updated tool for creating screenshots, which provides an ability to write comments right on the screenshot, new panel of instruments for editing screenshots and many others.