GILC -- The availablilty of internet resources to all, opposition to censorship, and internet free speech worldwide
PrivacyOrg -- Civil rights group dedicated to internet privacy
PrivacyInternational -- Monitors international attitudes to spying on citizens
EFF -- EFF is a donor-supported membership organization working to protect our fundamental rights regardless of technology; to educate the press, policymakers and the general public about civil liberties issues related to technology; and to act as a defender of those liberties.
EPIC -- US group concerned with freedom of speech, internet privacy, etc.
PrivacyFoundation -- News-watch on developments in electronic surveillance technology
KnowYourData -- PI campaign to find out about your personal data
PeaceFire -- Anti-censorship (web-filtering) group