Translation tools handle the task of translating content in one spoken or written language to another. If your request is for tools to help with this kind of task, this is the appropriate tag. If it is to help make an application suitable to be used in different human languages, please use the [localization] tag instead.
Translation deals with transporting poetry, manuscripts, and other texts between different languages. Wikipedia summarizes this as:
Translation is the communication of the meaning of a source-language text by means of an equivalent target-language text.
(Wikipedia quoting The Oxford Companion to the English Language)
If your intention is rather to make your application easier to deal with by users speaking a different language (or coming from a different culture), the localization tag should be used instead.