President of the Free Software Foundation, he will address the title:  Free Software and Your Freedom.

Brief bio:

 Richard Stallman launched the development of the GNU operating system (see www.gnu.org) in   1984.  GNU is free software: everyone has the freedom to copy it and redistribute it, as well as to make changes either large or small.  The GNU/Linux system, basically the GNU operating system with Linux added, is used on tens of millions of computers today.  Stallman has received the ACM Grace Hopper Award, a MacArthur Foundation fellowship, the Electronic Frontier Foundation's Pioneer Award, and the the Takeda Award for Social/Economic Betterment, as well as several honorary doctorates.

Abstract:

The Free Software Movement campaigns for computer users' freedom to cooperate and control their own computing.  The Free Software Movement developed the GNU operating system, typically used together with the kernel Linux, specifically to make these freedoms possible.