Plakaty.Ru is an online reference source for Russian and Soviet posters. The digital poster collection is browseable by subject matter (political, social, wartime, film, etc.) or by artist. The site also includes brief biographies for many poster artists. In Russian.
George Costakis (Kostakis) was a collector of Russian avant-garde art who lived in Moscow. His collection, or part of it, is now in Thessaloniki, Greece. The site tells a little about Russian Avant-Garde art and has a gallery featuring pictures of an "artist of the month" from the collection. It presently includes 23 artists. There is a video, a message board and the ability to send digital postcards. Viewing some portions requires Shockwave and IBM Bamba plug-ins. In English.
A wonderful online exhibition at the Library of Congress which gives access to the 19th century photoraphic collection of Prokudin Gorskii. Many images have been recreated in color (information on the process is also available on site). Site is in English.
The Mit'ki artists' group presents painting, drawings, and other art and literary works by its members, announcements of exhibitions and events, plus a history of the group. In Russian and English.
Masterpiece Art, an art house devoted to the exhibition and sale of fine art from contemporary Russian artists. Thumbnails of paintings and artworks are provided for quick viewing. In English.
Russian Treasure in San Francisco promises a unique boutique of Russian artwork, including Matryoshki and Lacquer Boxes. Note that users with slow connections may want to turn off image loading and JavaScript, as some large graphics and animations tend to lengthen the visit...