The Electronic Frontier Foundation.
This group keeps tabs on various information technology issues
concerning individual liberties vs. government and corporate interests.
Somewhat pro-individual liberty slant.
A seminal project founded in 1971 to make publicly available,
unencumbered, digital text for manuscripts in the public domain.
Currently about 36,000 manuscripts, with heavy emphasis on
English language classics.
Mostly in plain text (ascii) format.
Many other projects with similar goals have since been started.
Research branch of one of the world's premier information
security outfits. Their
has all sorts of interesting information on it.