Сама GeoGebra полностью русифицирована, но в Сизифе файлы с русификацией и документацией отсутствуют.

Ранее эта проблема обсуждалась здесь: http://forum.altlinux.org/index.php/topic,3792.msg54459.html#msg54459

Но сейчас у Geogebra другая лицензия: http://www.geogebra.org/download/license.txt

В частности, там написано:

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1) GeoGebra Language Files and Documentation License

   All GeoGebra language and documentation files are subject to 
   the following Creative Commons Attribution-Share Alike License; 
   either version 3.0 of the License, or (at your option) any later 
   version (see http://creativecommons.org/licenses/by-sa/3.0/):

   You are free to copy, distribute, transmit, and adapt GeoGebra 
   language files and documentation under the following conditions:
    * Attribution. You must attribute the work
        (i.e. by linking to http://www.geogebra.org/)
    * Share Alike. If you alter, transform, or build upon this work, 
        you may distribute the resulting work only under the same, 
        similar or a compatible license.

   GeoGebra file types that are subject to the abovmentioned license:
    * GeoGebra language files are ...
        the user interface language files ("properties files") for 
        all languages used by the GeoGebra application and applets. 
        They are part of every official GeoGebra binary distribution.
    * GeoGebra documentation files are ...
        all "GeoGebra Help", "GeoGebra Quickstart" and other 
        documentation files found on the GeoGebra webserver.

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То есть лицензия на локализацию сменилась с "Creative Commons Attribution-NonCommercial-NoDerivs" на "Creative Commons Attribution-Share Alike". Тем самым, насколько я понимаю, устранены препятствия для размещения локализации и документации в Сизифе и дистрибутивах.