Mezhdu Nami (Между нами), the first fully-online introductory Russian textbook, was released publicly in the summer of 2015 and is rapidly gaining popularity. "Mezhdu Nami is a free, web-based textbook that provides a comprehensive introduction to Russian language and culture. It is organized around the experiences of four American students, each spending the academic year in a different Russian city. Their interactions with host families, roommates, fellow students and teachers create a universe of contextualized information that motivates the use of the target language in the classroom"
Overview of the Между нами textbook website
By Lynne deBenedette, William J. Comer, Alla Smyslova, & Jonathan Perkins, 2016.
Second Year Russian Language and Culture
"A highly communicative approach to Intermediate Russian grounded in everyday culture and authentic texts.
Etazhi uses the communicative approach to advance student's Russian proficiency from the Novice High / Intermediate Low level of the ACTFL scale to an Intermediate Mid / Intermediate High level. Designed for one academic year of instruction, Etazhi engages students with highly relevant topics to internalize new vocabulary, expand their grammatical reach, and deepen their cultural understanding of Russian speakers"
Evgeny Dengub and Susanna Nazarova, 2021.
Both in English and Russian
The largest publishing houses in Russia specializing in Russian as a foreign language: