Elektronnyi Katalog RNB - The online catalog of the Russian National Library. The full catalog includes undigitized items, but digital collections can be browsed through the "Collections" tab at the top of the page.
Elektronnaia Biblioteka (RGB) - The digital library of the Russian State Library. Some digitized resources are restricted to use by registered RGB readers only, but many are free to access.
ElektronnaiaBiblioteka GPIB - A sizeable collection of digitized historical texts, including bibliographies, emigre publications, 19th century periodicals, avant-garde publications, and more.
Yeltsin Library Digital Collections - Thematic collections of digitized material, navigable in English and in Russian. Installation of Microsoft Silverlight is required to view the digitized images.
Elektronnaia biblioteka "ImWerden" - A free access, independently operated electronic library of literary, historical, philological, and reference works. Also includes a collection of audio and video recordings of authors reading their own work.
UbuWeb - Includes a collection of Russian avant-garde sound experiments and modernist poets reading their work.