In the Russian Federation 63 minority languages are mentioned in the "Red Book of the Languages of Russia", what means that they are practically dying out. Because of that it is highly important to make and preserve original recordings of these languages and prepare their documentation. Arctic peoples of Russia are demographically small and the number of speakers using them is decreasing dramatically. The paper describes three projects related to two Northern Languages - Nenets and Nganasan: Nenets Audio Dictionary, Nganasan Audio Dictionary and Russian-Nenets Online Multimedia Phrase-book.