As we already said around the forum, we would like to setup a language localization system for a future release (maybe already in the 0.4-beta), to allow users to switch the language of the RuneUI.
We still have to discuss the technical details but it will be probably done with .php lang files and contributions will be managed through .
In the meanwhile we could advance the job, so let's start to collect here the candidates who will translate the app in other languages (and also review the current English texts).