The Anarchist Library: A huge, free, constantly growing archive of Anarchist texts.
Archive.org: An ever-growing library of everything ever made.
bash.org's QDB: Iconic chatlog archive.
Fabrice Bellard's JSLinux: Implementations of Linux, Windows, and FreeDOS that run entirely in your web browser.
GNU.org: The home of GNU and the Free Software Foundation.
/idgames on Doomworld: The world's largest repository of mods for id Software's Doom.
Heart Process: Industrial Metal band from British Columbia.
Marxists.org: A massive, free archive of Marxist theory and writings.
Neocities: Geocities for the 21st century. Free website host.
The Pirate Bay: Tell yourself that you're just trying before you buy.
Quaddicted: Huge repository of resources and information for id Software's Quake.
Wikileaks: Snowden did nothing wrong.