Below is a list of manifestos I find to be important and critical to hacking, privacy, and information technologies. They are both directly and indirectly related to said topics.

Guerilla Open Access Manifesto

– by Aaron Swartz in July, 2008.

A Cypherpunk's Manifesto

– by Eric Hughes in March, 1993.

The Crypto Anarchist Manifesto

– by Timothy C. May in mid-1988.

The GNU Manifesto

– by Richard Stallman in March, 1985.