Sanskrit Library - contains digitized Sanskrit texts and various tools to analyse them http://sanskritlibrary.org/
Samskrita Bharati - an organisation established as an experiment in 1981 in Bangalore to bring Sanskrit back into daily life: http://www.samskrita-bharati.org/
An archive of Sanskrit dictionaries, readers & grammars in German, English & Russian. (circa 4000 Mb Book Scans, devanagari fonts): http://groups.google.com/group/Nagari