An On-line Russian Reference Grammar: Sections organized by parts of speech. Includes Java exercises.
DL Corp.: Offers Russian-English dictionary, spell-checking, and translator.
Learn Russian: Vocabulary and alphabet practice, quizzes, sound files.
MasterRussian.com: Language lessons, dictionaries, alphabet, pronunciation, grammar. Featured sections on making comparisons and girls' names.
Russian: A very thorough reference grammar of the Russian language, by Edna Andrews. Part of the Reference Grammar Network of the Slavic and East European Language Resource Center.
Russian Alphabet Tutorial: Introduces the Russian alphabet; includes some practice exercises and sound files. Does not require Russian fonts to be installed.
Russian for Everybody: Educational and reference material for both students and teachers. Includes studies, educational and methodical manuals, prepared by the leading experts of the Russian Friendship University.
Russian Language Course: Basic facts, alphabet, stress, and pronunciation.
Russian Linguistics: International journal for the study of the language. Site includes tables of contents and information for subscribers and contributors.
Russian Morphological Analysis: A database that analyzes/synthesizes forms and whole paradigms of Russian words. Entry by English translations also available. Best viewed with special fonts (downloadable onsite).
Russnet: Free thematic modules for language instruction that can be used in the classroom or for independent study.
Textbook of the Russian Language: Free conversation class for advanced students. Site is almost completely in Russian with occasional comments in English.
The Online Russian Language Center: English-Russian phrasebook with audio support, introductory phonetic course, grammar reference book, and bilingual library.
Theale Green Community School Russian Pages: Approximately 100 interactive exercises of various kinds, with sound files.
TITUS Font for Slavisch-Kyrillisch: Download the TITUS font from here.
Wikipedia - Russian Language: A collaboratively edited article covering classification, geographic distribution, writing system, sounds, grammar, vocabulary and history of the language.
Xerox MLTT Language Tools: Russian Demos: Perform tokenization, morphological analysis and part-of-speech disambiguation on texts.